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13)8+3n=-n-2(n-1)
We move all terms to the left:
13)8+3n-(-n-2(n-1))=0
We add all the numbers together, and all the variables
-1n+13)8+3n-(-2(n-1))=0
We multiply parentheses
-1n+13)8+3n-(-2n-=0
We add all the numbers together, and all the variables
-3n+13)8+3n-(=0
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