85=-3(-7m-7)-5m

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Solution for 85=-3(-7m-7)-5m equation: 



85=-3(-7m-7)-5m

We move all terms to the left:

85-(-3(-7m-7)-5m)=0



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

-3(-7m-7)-5m

We add all the numbers together, and all the variables

-5m-3(-7m-7)

We multiply parentheses

-5m+21m+21

We add all the numbers together, and all the variables

16m+21

Back to the equation:

-(16m+21)



We get rid of parentheses

-16m-21+85=0

We add all the numbers together, and all the variables

-16m+64=0

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

-16m=-64

m=-64/-16

m=+4

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