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