12(-7a-3)=-288

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Solution for 12(-7a-3)=-288 equation: 



12(-7a-3)=-288

We move all terms to the left:

12(-7a-3)-(-288)=0

We add all the numbers together, and all the variables

12(-7a-3)+288=0

We multiply parentheses

-84a-36+288=0

We add all the numbers together, and all the variables

-84a+252=0

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

-84a=-252

a=-252/-84

a=+3

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