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-2(3+m)=4
We move all terms to the left:
-2(3+m)-(4)=0
We add all the numbers together, and all the variables
-2(m+3)-4=0
We multiply parentheses
-2m-6-4=0
We add all the numbers together, and all the variables
-2m-10=0
We move all terms containing m to the left, all other terms to the right
-2m=10
m=10/-2
m=-5
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