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12.95+0.25m=21.90
We move all terms to the left:
12.95+0.25m-(21.90)=0
We add all the numbers together, and all the variables
0.25m+12.95-(21.9)=0
We add all the numbers together, and all the variables
0.25m-8.95=0
We move all terms containing m to the left, all other terms to the right
0.25m=8.95
m=8.95/0.25
m=35+0.2/0.25
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