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13=5-(-2m)
We move all terms to the left:
13-(5-(-2m))=0
We calculate terms in parentheses: -(5-(-2m)), so:We get rid of parentheses
5-(-2m)
determiningTheFunctionDomain -(-2m)+5
We get rid of parentheses
2m+5
Back to the equation:
-(2m+5)
-2m-5+13=0
We add all the numbers together, and all the variables
-2m+8=0
We move all terms containing m to the left, all other terms to the right
-2m=-8
m=-8/-2
m=+4
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