12.9=7.5+0.9m

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Solution for 12.9=7.5+0.9m equation: 



12.9=7.5+0.9m

We move all terms to the left:

12.9-(7.5+0.9m)=0

We add all the numbers together, and all the variables

-(0.9m+7.5)+12.9=0

We get rid of parentheses

-0.9m-7.5+12.9=0

We add all the numbers together, and all the variables

-0.9m+5.4=0

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

-0.9m=-5.4

m=-5.4/-0.9

m=+6

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