12 1 2 5 How do you say? Can 12 5 be equal to 10 5 2?

Equation primitive: 12-x=5

Problem solving: Move the unknowns to the left and merge them by moving the terms, move the constant terms to the right and merge them, and finally turn the unknown coefficients to 1

Problem solving: 12-x=5

x=12-5

x=7 If you have any doubts, please ask, satisfied.

This question can be said like this, the subtraction is equal to the subtraction of the difference, so in this question, the subtraction is equal to 12-5, so the answer is 7.

It should be a change.

Becoming a parenthesis is equal to 12-5=7, so the result is 7, and the parentheses are filled with 7

12-5=7 ) [because the difference plus or minus is equal to the subtracted].

Let the child know the inverse of subtraction.

Be. 12 Subtracting an unknown is equal to 5, just use 12-5, and the result is equal to 7 is this unknown.

This is an elementary school problem, 12-7=5, and it's calculated as 12-5=7, and the final result is 7.

This is an arithmetic problem in the first grade of primary school, it should be 12 minus the brackets how much is equal to five, so it is obvious, this bracket should be filled in seven.

For this question, you can use 12-5=7

Flipping it over is 12-7, which is equal to five.

You can use a counter to talk about the problem, or you can use a wooden stick to tell the problem, and ask the child to make the problem concrete, how many of the 12 wooden sticks are taken away and 5 are left.

12 Qi Du next to Gao Oak 5 = 10 + 2 5 so it can also be equal to 10 (5 2), the result is the same, the file is equal to 7

The two know each other well.

But it can't be simply converted.

10- (manuscript height 5-2).

In this way, you can build a mountain.

12 5 = 10 (5 2) = 7, this equation holds.

The numbers are the same, but there is no such way to solve the problem, and there is no need to use this illogical method.

According to the title, twelve minus five is also equal to twelve plus five, which is equal to seventeen, so the answer is 17.

Solution: The key to this problem is to subtract a negative number, and subtracting a number is equal to adding the number to send its opposite and congratulatory number, Bi Changze.

To solve equations 12 - 5, you can calculate as follows:

First, to simplify the equation: 12 - 5 can be converted to 12 - 5 = base judgment.

Then, the calculation is made: 12 - 5 = 7

Therefore, the solution of Equation 12 - 5 is 7.

Calculate 8 10 2 5 2 Use the associative law of multiplication, (8+

Undressing bend: 2 ( Hall good stuffy socks 10 1) = a 5 ( a 2) 2x+2 = -5x-2x (-5).

2x+2=-5x+10

2x+5x+2-2=-5x+5x+10-27x=8x=8/7

Hello, the first judge is poor, the calculation process is as follows:

Hope it can help you tease.

This is the subtraction of the fraction with different denominators, the original formula = 6 15-1 15 = 5 15 = 1 3, agree with it.

Solution: 2 5-1 15

6 15-1 15

5 and 15

22-15 equals 7. The calculation process is as follows:

Significance of subtraction:Subtraction follows several important modal gestures. It is anti-commutative, meaning that changing the order changes the symbol of the answer.

It is not binding, that is, when a minus is more than two numbers, the order of subtraction is important. Subtracting 0 does not change a number.

Subtraction also follows the rules of referencing for related operations such as addition and multiplication. All of these rules can be demonstrated, starting with the subtraction of integers and generalized by real numbers and other things.