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12.4m=117.8
We move all terms to the left:
12.4m-(117.8)=0
We add all the numbers together, and all the variables
12.4m-117.8=0
We move all terms containing m to the left, all other terms to the right
12.4m=117.8
m=117.8/12.4
m=9+1/2
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