-49=-7(-1+7m)+7(8m-7)

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Solution for -49=-7(-1+7m)+7(8m-7) equation: 



-49=-7(-1+7m)+7(8m-7)

We move all terms to the left:

-49-(-7(-1+7m)+7(8m-7))=0

We add all the numbers together, and all the variables

-(-7(7m-1)+7(8m-7))-49=0



We calculate terms in parentheses: -(-7(7m-1)+7(8m-7)), so:

-7(7m-1)+7(8m-7)

We multiply parentheses

-49m+56m+7-49

We add all the numbers together, and all the variables

7m-42

Back to the equation:

-(7m-42)



We get rid of parentheses

-7m+42-49=0

We add all the numbers together, and all the variables

-7m-7=0

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

-7m=7

m=7/-7

m=-1

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