-343=-7(7-6a)

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Solution for -343=-7(7-6a) equation: 



-343=-7(7-6a)

We move all terms to the left:

-343-(-7(7-6a))=0

We add all the numbers together, and all the variables

-(-7(-6a+7))-343=0



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

-7(-6a+7)

We multiply parentheses

42a-49

Back to the equation:

-(42a-49)



We get rid of parentheses

-42a+49-343=0

We add all the numbers together, and all the variables

-42a-294=0

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

-42a=294

a=294/-42

a=-7

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