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n=2-7-5n
We move all terms to the left:
n-(2-7-5n)=0
We add all the numbers together, and all the variables
n-(-5n-5)=0
We get rid of parentheses
n+5n+5=0
We add all the numbers together, and all the variables
6n+5=0
We move all terms containing n to the left, all other terms to the right
6n=-5
n=-5/6
n=-5/6
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