-15=-5(m-84)

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Solution for -15=-5(m-84) equation: 



-15=-5(m-84)

We move all terms to the left:

-15-(-5(m-84))=0



We calculate terms in parentheses: -(-5(m-84)), so:

-5(m-84)

We multiply parentheses

-5m+420

Back to the equation:

-(-5m+420)



We get rid of parentheses

5m-420-15=0

We add all the numbers together, and all the variables

5m-435=0

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

5m=435

m=435/5

m=87

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