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-3n+12n+n=22
We simplify the equation to the form, which is simple to understand
-3n+12n+n=22
We move all terms containing n to the left and all other terms to the right.
-3n+12n+1n=+22
We simplify left and right side of the equation.
+10n=+22
We divide both sides of the equation by 10 to get n.
n=2.2
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