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90.4=8(m+3.4)
We move all terms to the left:
90.4-(8(m+3.4))=0
We calculate terms in parentheses: -(8(m+3.4)), so:We get rid of parentheses
8(m+3.4)
We multiply parentheses
8m+27.2
Back to the equation:
-(8m+27.2)
-8m-27.2+90.4=0
We add all the numbers together, and all the variables
-8m+63.2=0
We move all terms containing m to the left, all other terms to the right
-8m=-63.2
m=-63.2/-8
m=7+6/6.6666666666667
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