15=7-3m

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Solution for 15=7-3m equation: 



15=7-3m

We move all terms to the left:

15-(7-3m)=0

We add all the numbers together, and all the variables

-(-3m+7)+15=0

We get rid of parentheses

3m-7+15=0

We add all the numbers together, and all the variables

3m+8=0

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

3m=-8

m=-8/3

m=-2+2/3

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