-
Off-line calculations.
Solution: When doing this kind of off-form operation, you should first consider the calculation in parentheses. Then consider multiplication and division first, and then add and subtract.
Then when we calculate specifically, we should consider the above calculation steps and calculate the answer step by step. So here, we can first calculate the subtraction operation in parentheses, and then perform the division operation and multiplication operation to get the answer.
The detailed calculation process is as follows.
So, through the above off-form calculation process, the answer is 1050.
Extended information: Solution: When we calculate the division operation, try to choose the dividend.
and divisors are both integers. If there is a decimal between the dividend and the divisor, it can be calculated as an integer. When calculating, you should start from the high of the dividend and divide the divider in turn to get the quotient and the remainder.
Reserve, and then the next calculation. If it is an infinite loop decimal place, it can be calculated to a few decimal places as required.
Step 1: 15 5 = 3
Step 2: On the basis of the answer in the first step, multiply by 10 to get 30 So, you can use the division operation of vertical calculation, and the answer obtained is 30.
-
This problem requires you to calculate the subtraction in parentheses first, then the multiplication and then the division.
-
Summary. Car B x km 3 (45+x) 272-173 (45+x) 255
35+x)x3=180
35+x)x3=180?I'm answering for you :
Solve equations. Hello!According to the current topic information, (35+x)x3=180?This is a simple calculation problem.
35+x)x3=18035+x=180÷3x=60-35x=25
Answer: 25 (35 + x) x 3 = 18035 + x 180 3 x 60-35x 25
Three hours later, the two cars were still 17 kilometers apart, car A traveled 45 kilometers per hour, and car B traveled how many kilometers per hourRolling Qing Column Equation Solution.
Good. Car B x km 3 (45+x) 272-173 (45+x) 255
Car B x km 3 (45+x) 272-173 (45+x) 25545+x 255 3x 85-45x 40
Answer: 40 B bucket stake car form empty qing x km 3 (then hall 45 + x) 272-173 (45 + x) 25545 + x 255 3 x 85-45 x 40
-
Summary. The specific calculation process is as follows: 35x-15x=15 20 30020x=1 x=1 20x=1 20
35x-15x=15×20/300
The specific calculation process is as follows: 35x-15x=15 20 30020x=1 x=1 20x=1 20
This problem requires the branches to calculate both sides of the equal sign first, and then use the properties of the equation to divide by 20 on both sides of the equal sign at the same time, and you can find the value of x
This question. Is it a solution to an equation?
Yes. First.
Column equation solution? <> right. Good.
Alright, teacher.
I've been waiting for you
There are a lot of people who consult.
The answer is 10 days
The specific calculation process is as follows:
Assuming that it will take x days, the good jujube can break out the following rock front equation: 22 1 40 + x (1 40 + 1 50) = 122 40 + 90x 2000 = 1x = 10
According to the conditions in the question, you can list the above equations
-
Summary. The specific calculation process is as follows: 35x(21 480 5)=35 (21+96)=35 117=4095
The specific calculation process is as follows: 35x(21 480 5)=35 (21+96)=35 117=4095
According to the algorithm, this problem requires the waiter to calculate the division in parentheses first, then calculate the addition, and then calculate the multiplication
Okay, this problem uses the multiplicative distributive property to calculate
-
Summary. Pro, the solution equation is as follows: 35x12-35x=140420-35x=14035x=420-14035x=280x=8
Dear, this question will take about two minutes, and I'll send it to you right away.
Pro, the solution equation is as follows: 35x12-35x=140420-35x=14035x=420-14035x=280x=8
Extension: The principle followed in solving the equation is: both sides of the equation are added, subtracted, multiplied and divided by the same number at the same time, and the equation remains unchanged.
-
Summary. 3x ten 40x3 = 1503x + 120 = 1503x = 30x = 10
3x ten 40x3 = 1503x + 120 = 1503x = 30x = 10
So 3x ten 40x3=150, the solution is x=10<>
3x+120=1503x=30x=10
5x-4)x7 84 (18x-3) 12, according to the number of books to take the stool to learn the state travel solution on the book, wait a while, two by two will give you sensitive hair.
OK50 A 3X) 7 5X Ten.
5x-4)x7 84 35x-28=8435x-28+28=84+2835x=112x=112x=112x=
5x ten, 50-3x) 7 (50-3x) 7, 7-7-750-3x=
3.The sum weight of Vena and Xiaozhou is 957 grams, and the weight of Vena is 42 kilograms. What is the weight tax on a boat?
4. The oracle bone is the earliest mature Chinese character that we can see, and about 450 words have been found so far, and to this day, about 2,500 words have been broken and leaked, and how many words have returned to the town and have not been cracked?
The sum weight of Vena and Xiaozhou is 957 grams, and the weight of Vena is 42 kilograms. What is the weight of the boat 957-42=915
Kiss your question 4.
About 450 words have been found
I have to be right to get the question right.
The two-column equation solves the following problem of Muffy Xunhui Buchang Slow School Answering School Sports Meeting, Wang Peng won the championship of the rope skipping competition. He jumped 132, 26 more than Li Lin, how many did Li Lin jump? 2. There are 43 baskets of apples in the fruit store, and 35 baskets are sold, how many baskets are still stabbed?
Li Lin jumped x26 + x = 132x = 132 - 26x = 106
-
Summary. 2.Dissolve dripping x kg of water per minute. Half an hour = 60 2 = 30 minutes. 30x = A: Kilograms of water are dripped per minute.
Follow the solution in the math book.
Good. 3x ten 40x3 = 1503x + 120 = 1503x + 120-120 = 150-1203x = 303x 3 = 30 3x = 10
Twelve. The column equation solves the following problem 1Xiao Ming's height this year is taller, he is taller than last year, how tall was Xiao Ming last year? 2.A water dragon dripping water in the morning of Duan Hu has been dripping water for half an hour, how much water does this faucet drip out every minute?
Ten 1 A: Xiao Ming's height last year was meters.
1 Explanation of the chain of repentance, Xiao Ming was stupid last year, Sun Gao was x meters x + Answer: Xiao Ming went to Bi file Sun Nian's height was meters.
2.Solve the dripping every minute of the lack of mountains out of x thousand dress gram water. Half an hour = 60 2 = 30 minutes. 30x = A: Kilograms of water are dripped per minute.
2.Answer: Kilograms of water are dripped per minute.
Thank you, teacher. Equation problems generally only need to find the equation relationship that exists in the problem sail and slow, rely on the equation state modulo equation, and then solve the equation can be Lao Fu.
Here are some of the well-known brands recognized in the valve industry, which are widely recognized and have a high reputation. While rankings may vary depending on time and market conditions, the following brands are generally considered to be among the top brands in the valve industry: >>>More
Spinach. I also came here last year After thinking about it for almost three months, I finally came here It's not as good as I imagined It's not as good as it says on the Internet In short, it's still within my acceptance range I've been here for more than half a year From Xiaobai to now... It's also a growth, and the only thing worth encouraging is that I never thought of giving up, and I looked up a lot of one-sided information about this industry on the Internet before I came, and I know it, whether it's good, it's bad, it's scary, it's scary, and so on. >>>More
The often said 35 air conditioner refers to the cooling capacity of this air conditioner is about 3500W. >>>More
35cr, alloy structural steel, and 30cr steel belong to the same medium carbon alloy quenched and tempered steel with high strength and toughness, and the strength limit is higher than that of the corresponding grade of 35 steel. >>>More
Toyota Ruizhi. For the first time, the new REIZ adopts the FR front-engine rear-wheel drive technology that is usually used in high-end cars, so that smooth handling and surging driving force are eclectic, and truly achieve the top driving performance in the middle class. In addition, the REIZ four-wheel design is closer to the four corners of the body, which realizes the stability of the low center of gravity to the greatest extent, and achieves the ideal distribution of 54:46 of the front and rear body weight through the most scientific layout. >>>More