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4-m/2=-20
We move all terms to the left:
4-m/2-(-20)=0
We add all the numbers together, and all the variables
-m/2+24=0
We multiply all the terms by the denominator
-m+24*2=0
We add all the numbers together, and all the variables
-1m+48=0
We move all terms containing m to the left, all other terms to the right
-m=-48
m=-48/-1
m=+48
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