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12n-12 (n+11)=-138
We simplify the equation to the form, which is simple to understand
12n-12(n+11)=-138
Reorder the terms in parentheses
12n+(-12n-132)=-138
Remove unnecessary parentheses
+12n-12n-132=-138
We move all terms containing n to the left and all other terms to the right.
+12n-12n=-138+132
We simplify left and right side of the equation.
n=-6
0=-6
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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