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4(m+3)=13.
We move all terms to the left:
4(m+3)-(13.)=0
We add all the numbers together, and all the variables
4(m+3)-13=0
We multiply parentheses
4m+12-13=0
We add all the numbers together, and all the variables
4m-1=0
We move all terms containing m to the left, all other terms to the right
4m=1
m=1/4
m=1/4
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