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12=2m+3.2
We move all terms to the left:
12-(2m+3.2)=0
We get rid of parentheses
-2m-3.2+12=0
We add all the numbers together, and all the variables
-2m+8.8=0
We move all terms containing m to the left, all other terms to the right
-2m=-8.8
m=-8.8/-2
m=4+0.8/2
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