171=5m+7(3-5m)

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Solution for 171=5m+7(3-5m) equation: 



171=5m+7(3-5m)

We move all terms to the left:

171-(5m+7(3-5m))=0

We add all the numbers together, and all the variables

-(5m+7(-5m+3))+171=0



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

5m+7(-5m+3)

We multiply parentheses

5m-35m+21

We add all the numbers together, and all the variables

-30m+21

Back to the equation:

-(-30m+21)



We get rid of parentheses

30m-21+171=0

We add all the numbers together, and all the variables

30m+150=0

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

30m=-150

m=-150/30

m=-5

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