4(a-3)-7(a+6)=12

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Solution for 4(a-3)-7(a+6)=12 equation: 



4(a-3)-7(a+6)=12

We move all terms to the left:

4(a-3)-7(a+6)-(12)=0

We multiply parentheses

4a-7a-12-42-12=0

We add all the numbers together, and all the variables

-3a-66=0

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

-3a=66

a=66/-3

a=-22

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