(7n-9)+(5n+45)=180

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Solution for (7n-9)+(5n+45)=180 equation:


(7n-9)+(5n+45)=180

We simplify the equation to the form, which is simple to understand 
(7n-9)+(5n+45)=180

Remove unnecessary parentheses
7n-9+(5n+45)=180

Remove unnecessary parentheses
+7n-9+5n+45=+180

We move all terms containing n to the left and all other terms to the right. 
+7n+5n=+180+9-45

We simplify left and right side of the equation. 
+12n=+144

We divide both sides of the equation by 12 to get n. 
n=12

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