-5(6+6a)=7(3a+3)

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Solution for -5(6+6a)=7(3a+3) equation: 



-5(6+6a)=7(3a+3)

We move all terms to the left:

-5(6+6a)-(7(3a+3))=0

We add all the numbers together, and all the variables

-5(6a+6)-(7(3a+3))=0

We multiply parentheses

-30a-(7(3a+3))-30=0



We calculate terms in parentheses: -(7(3a+3)), so:

7(3a+3)

We multiply parentheses

21a+21

Back to the equation:

-(21a+21)



We get rid of parentheses

-30a-21a-21-30=0

We add all the numbers together, and all the variables

-51a-51=0

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

-51a=51

a=51/-51

a=-1

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