12m-90=9m+45

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Solution for 12m-90=9m+45 equation: 



12m-90=9m+45

We move all terms to the left:

12m-90-(9m+45)=0

We get rid of parentheses

12m-9m-45-90=0

We add all the numbers together, and all the variables

3m-135=0

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

3m=135

m=135/3

m=45

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