-169=8m-9

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Solution for -169=8m-9 equation: 



-169=8m-9

We move all terms to the left:

-169-(8m-9)=0

We get rid of parentheses

-8m+9-169=0

We add all the numbers together, and all the variables

-8m-160=0

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

-8m=160

m=160/-8

m=-20

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