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8+1+3n+8n=-5n+7n
We move all terms to the left:
8+1+3n+8n-(-5n+7n)=0
We add all the numbers together, and all the variables
3n+8n-(+2n)+8+1=0
We add all the numbers together, and all the variables
11n-(+2n)+9=0
We get rid of parentheses
11n-2n+9=0
We add all the numbers together, and all the variables
9n+9=0
We move all terms containing n to the left, all other terms to the right
9n=-9
n=-9/9
n=-1
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