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0.3m+3-0.83m=-15
We move all terms to the left:
0.3m+3-0.83m-(-15)=0
We add all the numbers together, and all the variables
-0.53m+18=0
We move all terms containing m to the left, all other terms to the right
-0.53m=-18
m=-18/-0.53
m=33+0.51/0.53
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