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-7n-(8-2n)=-4(n=5)
We move all terms to the left:
-7n-(8-2n)-(-4(n)=0
We add all the numbers together, and all the variables
-7n-(-2n+8)-(-4n=0
We get rid of parentheses
-7n+2n-(-4n-8=0
We add all the numbers together, and all the variables
-5n-(-4n-8=0
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