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13=5-(8m)
We move all terms to the left:
13-(5-(8m))=0
We add all the numbers together, and all the variables
-(-8m+5)+13=0
We get rid of parentheses
8m-5+13=0
We add all the numbers together, and all the variables
8m+8=0
We move all terms containing m to the left, all other terms to the right
8m=-8
m=-8/8
m=-1
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