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

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



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

We move all terms to the left:

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



We calculate terms in parentheses: -(-4(a+6)), so:

-4(a+6)

We multiply parentheses

-4a-24

Back to the equation:

-(-4a-24)



We get rid of parentheses

-7a+4a+24-3=0

We add all the numbers together, and all the variables

-3a+21=0

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

-3a=-21

a=-21/-3

a=+7

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