-43=-7x+3(5x+7)

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Solution for -43=-7x+3(5x+7) equation: 



-43=-7x+3(5x+7)

We move all terms to the left:

-43-(-7x+3(5x+7))=0



We calculate terms in parentheses: -(-7x+3(5x+7)), so:

-7x+3(5x+7)

We multiply parentheses

-7x+15x+21

We add all the numbers together, and all the variables

8x+21

Back to the equation:

-(8x+21)



We get rid of parentheses

-8x-21-43=0

We add all the numbers together, and all the variables

-8x-64=0

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

-8x=64

x=64/-8

x=-8

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