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-13-2n=7+2n
We simplify the equation to the form, which is simple to understand
-13-2n=7+2n
We move all terms containing n to the left and all other terms to the right.
-2n-2n=+7+13
We simplify left and right side of the equation.
-4n=+20
We divide both sides of the equation by -4 to get n.
n=-5
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