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8+-7m=15+4m
We move all terms to the left:
8+-7m-(15+4m)=0
We add all the numbers together, and all the variables
-7m-(4m+15)+8+=0
We add all the numbers together, and all the variables
-7m-(4m+15)=0
We get rid of parentheses
-7m-4m-15=0
We add all the numbers together, and all the variables
-11m-15=0
We move all terms containing m to the left, all other terms to the right
-11m=15
m=15/-11
m=-1+4/11
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