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5(3-5m)+18=-142
We move all terms to the left:
5(3-5m)+18-(-142)=0
We add all the numbers together, and all the variables
5(-5m+3)+18-(-142)=0
We add all the numbers together, and all the variables
5(-5m+3)+160=0
We multiply parentheses
-25m+15+160=0
We add all the numbers together, and all the variables
-25m+175=0
We move all terms containing m to the left, all other terms to the right
-25m=-175
m=-175/-25
m=+7
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