18+3m=90

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Solution for 18+3m=90 equation: 



18+3m=90

We move all terms to the left:

18+3m-(90)=0

We add all the numbers together, and all the variables

3m-72=0

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

3m=72

m=72/3

m=24

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