Elementary 1 Mathematics Solving equations

Solution:1

The solution is a=60

2.Set the user's electricity consumption B kilowatts.

Then when b=a.

The electricity bill payable is.

On behalf of the multiplication sign) I understand the meaning of the question in this way, I don't know if the second question of lz is a bit of a problem with the input, o( o

Solution: 1, +85-a).

85-a)*

a= 602, let the electricity consumption x degrees in December, there is an equation.

x-60)* 60* = x*

Solvable: x= 165

Among them: 8.

1) Multiply by 80% = 44

a = 60 electricity consumption x kWh.

2) Multiply 80% = ?

Do the math yourself! (2) If you have a problem, take a look for yourself.

1) According to the title, the excess kWh in November is (85-a), and the equation is .

can find the value of a;

I'm sorry, I don't know the second question, I don't understand the question.

Solution: Set up a liaison officer to catch up with the front team in x hours, you can get it.

x-6x1/10÷12)(12-6)=6(1/10+6x1/10÷12)

6x-3/10=9/10

6x=12/10

x=1 5 The distance traveled by the front team is:

6x(1 0+1 5) = km.

I can catch up, and at this time kilometers.

Solution: The minimum speed at which the liaison officer catches up with the front team is x kilometers per hour 2 6=

x=so you can catch up.

Let the purchase price be socks cherry x then the old (1+50%) x 200 (1+100%)x the range of the counter-offer is y then y (1+20%)

<1> 7 10x+2 5-1 2=2 , x=3<2> ,xapprox.=

3> x=-1+10 3-10 7=19 21 Child, you don't count yourself for shrimp, that's not a lot...

The equation 2x-3y=1 is known

The solution of 3x+5y= is x=, y=

Do it in an easy way; 2a-3b-8=1

3a+5b+7=

The solution is a=, b=

The reason is to solve the equation in the same way

Solution: Let the area of the overlapping part be x square centimeters, then.

The area of the large rectangle is 6x square centimeters, and the area of the small rectangle is 4x square centimeters, so (6x-x) + (4x-x) = 224

8x=224

x = 28 A: The overlapping part has an area of 28 square centimeters.

I'm glad to solve the above problems for you, I hope it will help you in your studies! 】≤