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125m-75m+3900=40200-150m
We move all terms to the left:
125m-75m+3900-(40200-150m)=0
We add all the numbers together, and all the variables
125m-75m-(-150m+40200)+3900=0
We add all the numbers together, and all the variables
50m-(-150m+40200)+3900=0
We get rid of parentheses
50m+150m-40200+3900=0
We add all the numbers together, and all the variables
200m-36300=0
We move all terms containing m to the left, all other terms to the right
200m=36300
m=36300/200
m=181+1/2
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