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-3n-15=27
We simplify the equation to the form, which is simple to understand
-3n-15=27
We move all terms containing n to the left and all other terms to the right.
-3n=+27+15
We simplify left and right side of the equation.
-3n=+42
We divide both sides of the equation by -3 to get n.
n=-14
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