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21n-102=11n+8
We simplify the equation to the form, which is simple to understand
21n-102=11n+8
We move all terms containing n to the left and all other terms to the right.
+21n-11n=+8+102
We simplify left and right side of the equation.
+10n=+110
We divide both sides of the equation by 10 to get n.
n=11
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