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84=7 (-n+4)
We simplify the equation to the form, which is simple to understand
84=7(-n+4)
Reorder the terms in parentheses
84=+(-7n+28)
Remove unnecessary parentheses
+84=-7n+28
We move all terms containing n to the left and all other terms to the right.
+7n=+28-84
We simplify left and right side of the equation.
+7n=-56
We divide both sides of the equation by 07 to get n.
n=-8
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