Question

please help to solve the equations!

1) 3(k+5)=-2(3k-6)

2)1/2r+4=3/4r-3/2

3)2a-9=2a+5

4)8m+2+4m=2(6m+1)

Answer 1

Glad to help, but in my view "helping" means providing you with assistance only after you've begun your own efforts to solve these problems.

Look at    3(k+5)=-2(3k-6).  Goal:  Solve for k.
Multiplying where indicated:

             3k + 15 = -6k + 12

Add 6k to both sides:         9k = 12 - 15

dividing both sides by 9:  k = -3/9, or    k = -1/3   (answer).

Please start one of the other solutions; ask if you have questions about it.