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-15=2n-6+1
We move all terms to the left:
-15-(2n-6+1)=0
We add all the numbers together, and all the variables
-(2n-5)-15=0
We get rid of parentheses
-2n+5-15=0
We add all the numbers together, and all the variables
-2n-10=0
We move all terms containing n to the left, all other terms to the right
-2n=10
n=10/-2
n=-5
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