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30=7m+4
We move all terms to the left:
30-(7m+4)=0
We get rid of parentheses
-7m-4+30=0
We add all the numbers together, and all the variables
-7m+26=0
We move all terms containing m to the left, all other terms to the right
-7m=-26
m=-26/-7
m=3+5/7
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