10m+9=8m-9

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Solution for 10m+9=8m-9 equation: 



10m+9=8m-9

We move all terms to the left:

10m+9-(8m-9)=0

We get rid of parentheses

10m-8m+9+9=0

We add all the numbers together, and all the variables

2m+18=0

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

2m=-18

m=-18/2

m=-9

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