-7(3+2a)=15-18a

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Solution for -7(3+2a)=15-18a equation: 



-7(3+2a)=15-18a

We move all terms to the left:

-7(3+2a)-(15-18a)=0

We add all the numbers together, and all the variables

-7(2a+3)-(-18a+15)=0

We multiply parentheses

-14a-(-18a+15)-21=0

We get rid of parentheses

-14a+18a-15-21=0

We add all the numbers together, and all the variables

4a-36=0

We move all terms containing a to the left, all other terms to the right

4a=36

a=36/4

a=9

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