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15n-5n=20
We simplify the equation to the form, which is simple to understand
15n-5n=20
We move all terms containing n to the left and all other terms to the right.
+15n-5n=+20
We simplify left and right side of the equation.
+10n=+20
We divide both sides of the equation by 10 to get n.
n=2
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