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18+12n=8n-13+4n
We simplify the equation to the form, which is simple to understand
18+12n=8n-13+4n
We move all terms containing n to the left and all other terms to the right.
+12n-8n-4n=-13-18
We simplify left and right side of the equation.
n=-31
0=-31
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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