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28-n=-2(n-7)+8n
We move all terms to the left:
28-n-(-2(n-7)+8n)=0
We add all the numbers together, and all the variables
-1n-(-2(n-7)+8n)+28=0
We calculate terms in parentheses: -(-2(n-7)+8n), so:We get rid of parentheses
-2(n-7)+8n
We add all the numbers together, and all the variables
8n-2(n-7)
We multiply parentheses
8n-2n+14
We add all the numbers together, and all the variables
6n+14
Back to the equation:
-(6n+14)
-1n-6n-14+28=0
We add all the numbers together, and all the variables
-7n+14=0
We move all terms containing n to the left, all other terms to the right
-7n=-14
n=-14/-7
n=+2
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