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-20+m-18=-8m+16
We move all terms to the left:
-20+m-18-(-8m+16)=0
We add all the numbers together, and all the variables
m-(-8m+16)-38=0
We get rid of parentheses
m+8m-16-38=0
We add all the numbers together, and all the variables
9m-54=0
We move all terms containing m to the left, all other terms to the right
9m=54
m=54/9
m=6
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