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6n-21=-4+6(n-2)
We simplify the equation to the form, which is simple to understand
6n-21=-4+6(n-2)
Reorder the terms in parentheses
6n-21=-4+(+6n-12)
Remove unnecessary parentheses
+6n-21=-4+6n-12
We move all terms containing n to the left and all other terms to the right.
+6n-6n=-4-12+21
We simplify left and right side of the equation.
n=+5
0=5
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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