343=-7(8a+7)

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Solution for 343=-7(8a+7) equation: 



343=-7(8a+7)

We move all terms to the left:

343-(-7(8a+7))=0



We calculate terms in parentheses: -(-7(8a+7)), so:

-7(8a+7)

We multiply parentheses

-56a-49

Back to the equation:

-(-56a-49)



We get rid of parentheses

56a+49+343=0

We add all the numbers together, and all the variables

56a+392=0

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

56a=-392

a=-392/56

a=-7

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