m+3=4m-12

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Solution for m+3=4m-12 equation: 



m+3=4m-12

We move all terms to the left:

m+3-(4m-12)=0

We get rid of parentheses

m-4m+12+3=0

We add all the numbers together, and all the variables

-3m+15=0

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

-3m=-15

m=-15/-3

m=+5

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