7m+8=9m+40

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Solution for 7m+8=9m+40 equation: 



7m+8=9m+40

We move all terms to the left:

7m+8-(9m+40)=0

We get rid of parentheses

7m-9m-40+8=0

We add all the numbers together, and all the variables

-2m-32=0

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

-2m=32

m=32/-2

m=-16

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