m+1-3m=-7-4m

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Solution for m+1-3m=-7-4m equation: 



m+1-3m=-7-4m

We move all terms to the left:

m+1-3m-(-7-4m)=0

We add all the numbers together, and all the variables

m-3m-(-4m-7)+1=0

We add all the numbers together, and all the variables

-2m-(-4m-7)+1=0

We get rid of parentheses

-2m+4m+7+1=0

We add all the numbers together, and all the variables

2m+8=0

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

2m=-8

m=-8/2

m=-4

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