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n+1-2n=-4
We simplify the equation to the form, which is simple to understand
n+1-2n=-4
We move all terms containing n to the left and all other terms to the right.
+1n-2n=-4-1
We simplify left and right side of the equation.
-1n=-5
We divide both sides of the equation by -1 to get n.
n=5
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