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7n+3=0
We simplify the equation to the form, which is simple to understand
7n+3=0
We move all terms containing n to the left and all other terms to the right.
+7n=0-3
We simplify left and right side of the equation.
+7n=-3
We divide both sides of the equation by 7 to get n.
n=-0.428571428571
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