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7n-20=9(4n+9)
We simplify the equation to the form, which is simple to understand
7n-20=9(4n+9)
Reorder the terms in parentheses
7n-20=+(+36n+81)
Remove unnecessary parentheses
+7n-20=+36n+81
We move all terms containing n to the left and all other terms to the right.
+7n-36n=+81+20
We simplify left and right side of the equation.
-29n=+101
We divide both sides of the equation by -29 to get n.
n=-3.48275862069
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