-231=7(6a+3)

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Solution for -231=7(6a+3) equation: 



-231=7(6a+3)

We move all terms to the left:

-231-(7(6a+3))=0



We calculate terms in parentheses: -(7(6a+3)), so:

7(6a+3)

We multiply parentheses

42a+21

Back to the equation:

-(42a+21)



We get rid of parentheses

-42a-21-231=0

We add all the numbers together, and all the variables

-42a-252=0

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

-42a=252

a=252/-42

a=-6

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