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-3-2n=5+7n
We move all terms to the left:
-3-2n-(5+7n)=0
We add all the numbers together, and all the variables
-2n-(7n+5)-3=0
We get rid of parentheses
-2n-7n-5-3=0
We add all the numbers together, and all the variables
-9n-8=0
We move all terms containing n to the left, all other terms to the right
-9n=8
n=8/-9
n=-8/9
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