15(a-9)=-7-8

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Solution for 15(a-9)=-7-8 equation: 



15(a-9)=-7-8

We move all terms to the left:

15(a-9)-(-7-8)=0

We add all the numbers together, and all the variables

15(a-9)-(-15)=0

We add all the numbers together, and all the variables

15(a-9)+15=0

We multiply parentheses

15a-135+15=0

We add all the numbers together, and all the variables

15a-120=0

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

15a=120

a=120/15

a=8

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