-81=-4m-5

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Solution for -81=-4m-5 equation: 



-81=-4m-5

We move all terms to the left:

-81-(-4m-5)=0

We get rid of parentheses

4m+5-81=0

We add all the numbers together, and all the variables

4m-76=0

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

4m=76

m=76/4

m=19

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