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7(n-1)+3=20+4n
We simplify the equation to the form, which is simple to understand
7(n-1)+3=20+4n
Reorder the terms in parentheses
+(+7n-7)+3=20+4n
Remove unnecessary parentheses
+7n-7+3=+20+4n
We move all terms containing n to the left and all other terms to the right.
+7n-4n=+20+7-3
We simplify left and right side of the equation.
+3n=+24
We divide both sides of the equation by 3 to get n.
n=8
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