7n-7+2n=-(-5n-9)

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Solution for 7n-7+2n=-(-5n-9) equation:


7n-7+2n=-(-5n-9)

We simplify the equation to the form, which is simple to understand 
7n-7+2n=-(-5n-9)

Remove unnecessary parentheses
7n-7+2n=+5n+9

We move all terms containing n to the left and all other terms to the right. 
+7n+2n-5n=+9+7

We simplify left and right side of the equation. 
+4n=+16

We divide both sides of the equation by 4 to get n. 
n=4

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