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21-7m+1=10m-6
We move all terms to the left:
21-7m+1-(10m-6)=0
We add all the numbers together, and all the variables
-7m-(10m-6)+22=0
We get rid of parentheses
-7m-10m+6+22=0
We add all the numbers together, and all the variables
-17m+28=0
We move all terms containing m to the left, all other terms to the right
-17m=-28
m=-28/-17
m=1+11/17
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