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98.4=8(m+3.9)
We move all terms to the left:
98.4-(8(m+3.9))=0
We calculate terms in parentheses: -(8(m+3.9)), so:We get rid of parentheses
8(m+3.9)
We multiply parentheses
8m+31.2
Back to the equation:
-(8m+31.2)
-8m-31.2+98.4=0
We add all the numbers together, and all the variables
-8m+67.2=0
We move all terms containing m to the left, all other terms to the right
-8m=-67.2
m=-67.2/-8
m=8+2.66666666667/6.66666666667
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