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1+2n-3n=-2
We simplify the equation to the form, which is simple to understand
1+2n-3n=-2
We move all terms containing n to the left and all other terms to the right.
+2n-3n=-2-1
We simplify left and right side of the equation.
-1n=-3
We divide both sides of the equation by -1 to get n.
n=3
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