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-42m-42=-35m-30-6m
We move all terms to the left:
-42m-42-(-35m-30-6m)=0
We add all the numbers together, and all the variables
-42m-(-41m-30)-42=0
We get rid of parentheses
-42m+41m+30-42=0
We add all the numbers together, and all the variables
-1m-12=0
We move all terms containing m to the left, all other terms to the right
-m=12
m=12/-1
m=-12
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