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3.5(1+4m)-2m=-13
We move all terms to the left:
3.5(1+4m)-2m-(-13)=0
We add all the numbers together, and all the variables
3.5(4m+1)-2m-(-13)=0
We add all the numbers together, and all the variables
-2m+3.5(4m+1)+13=0
We multiply parentheses
-2m+14m+3.5+13=0
We add all the numbers together, and all the variables
12m+16.5=0
We move all terms containing m to the left, all other terms to the right
12m=-16.5
m=-16.5/12
m=-1+1/2.6666666666667
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