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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