215=5(1-7m)

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Solution for 215=5(1-7m) equation: 



215=5(1-7m)

We move all terms to the left:

215-(5(1-7m))=0

We add all the numbers together, and all the variables

-(5(-7m+1))+215=0



We calculate terms in parentheses: -(5(-7m+1)), so:

5(-7m+1)

We multiply parentheses

-35m+5

Back to the equation:

-(-35m+5)



We get rid of parentheses

35m-5+215=0

We add all the numbers together, and all the variables

35m+210=0

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

35m=-210

m=-210/35

m=-6

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