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-n-3n=4
We simplify the equation to the form, which is simple to understand
-n-3n=4
We move all terms containing n to the left and all other terms to the right.
-1n-3n=+4
We simplify left and right side of the equation.
-4n=+4
We divide both sides of the equation by -4 to get n.
n=-1
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