-91=7(-4-4m)+7m

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Solution for -91=7(-4-4m)+7m equation: 



-91=7(-4-4m)+7m

We move all terms to the left:

-91-(7(-4-4m)+7m)=0

We add all the numbers together, and all the variables

-(7(-4m-4)+7m)-91=0



We calculate terms in parentheses: -(7(-4m-4)+7m), so:

7(-4m-4)+7m

We add all the numbers together, and all the variables

7m+7(-4m-4)

We multiply parentheses

7m-28m-28

We add all the numbers together, and all the variables

-21m-28

Back to the equation:

-(-21m-28)



We get rid of parentheses

21m+28-91=0

We add all the numbers together, and all the variables

21m-63=0

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

21m=63

m=63/21

m=3

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