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-7(1-4)m=13(2m-3)
We move all terms to the left:
-7(1-4)m-(13(2m-3))=0
We add all the numbers together, and all the variables
-7(-3)m-(13(2m-3))=0
We multiply parentheses
21m-(13(2m-3))=0
We calculate terms in parentheses: -(13(2m-3)), so:We get rid of parentheses
13(2m-3)
We multiply parentheses
26m-39
Back to the equation:
-(26m-39)
21m-26m+39=0
We add all the numbers together, and all the variables
-5m+39=0
We move all terms containing m to the left, all other terms to the right
-5m=-39
m=-39/-5
m=7+4/5
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