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80=8(m+2.9)
We move all terms to the left:
80-(8(m+2.9))=0
We calculate terms in parentheses: -(8(m+2.9)), so:We get rid of parentheses
8(m+2.9)
We multiply parentheses
8m+23.2
Back to the equation:
-(8m+23.2)
-8m-23.2+80=0
We add all the numbers together, and all the variables
-8m+56.8=0
We move all terms containing m to the left, all other terms to the right
-8m=-56.8
m=-56.8/-8
m=7+0.8/8
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