15=7-5m

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Solution for 15=7-5m equation: 



15=7-5m

We move all terms to the left:

15-(7-5m)=0

We add all the numbers together, and all the variables

-(-5m+7)+15=0

We get rid of parentheses

5m-7+15=0

We add all the numbers together, and all the variables

5m+8=0

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

5m=-8

m=-8/5

m=-1+3/5

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