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8.25=m-4
We move all terms to the left:
8.25-(m-4)=0
We get rid of parentheses
-m+4+8.25=0
We add all the numbers together, and all the variables
-1m+12.25=0
We move all terms containing m to the left, all other terms to the right
-m=-12.25
m=-12.25/-1
m=12+0.25/1
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