12m-18=90

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Solution for 12m-18=90 equation: 



12m-18=90

We move all terms to the left:

12m-18-(90)=0

We add all the numbers together, and all the variables

12m-108=0

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

12m=108

m=108/12

m=9

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