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6+n=-1+2n
We move all terms to the left:
6+n-(-1+2n)=0
We add all the numbers together, and all the variables
n-(2n-1)+6=0
We get rid of parentheses
n-2n+1+6=0
We add all the numbers together, and all the variables
-1n+7=0
We move all terms containing n to the left, all other terms to the right
-n=-7
n=-7/-1
n=+7
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