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18-13+n=-4
We simplify the equation to the form, which is simple to understand
18-13+n=-4
We move all terms containing n to the left and all other terms to the right.
+1n=-4-18+13
We simplify left and right side of the equation.
+1n=-9
We divide both sides of the equation by 1 to get n.
n=-9
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