87=7(1+3m)

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Solution for 87=7(1+3m) equation: 



87=7(1+3m)

We move all terms to the left:

87-(7(1+3m))=0

We add all the numbers together, and all the variables

-(7(3m+1))+87=0



We calculate terms in parentheses: -(7(3m+1)), so:

7(3m+1)

We multiply parentheses

21m+7

Back to the equation:

-(21m+7)



We get rid of parentheses

-21m-7+87=0

We add all the numbers together, and all the variables

-21m+80=0

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

-21m=-80

m=-80/-21

m=3+17/21

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