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13m+15=7m+3(5+2m)
We move all terms to the left:
13m+15-(7m+3(5+2m))=0
We add all the numbers together, and all the variables
13m-(7m+3(2m+5))+15=0
We calculate terms in parentheses: -(7m+3(2m+5)), so:We get rid of parentheses
7m+3(2m+5)
We multiply parentheses
7m+6m+15
We add all the numbers together, and all the variables
13m+15
Back to the equation:
-(13m+15)
13m-13m-15+15=0
We add all the numbers together, and all the variables
=0
m=0/1
m=0
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