n+3-7n=-9

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Solution for n+3-7n=-9 equation:


n+3-7n=-9

We simplify the equation to the form, which is simple to understand 
n+3-7n=-9

We move all terms containing n to the left and all other terms to the right. 
+1n-7n=-9-3

We simplify left and right side of the equation. 
-6n=-12

We divide both sides of the equation by -6 to get n. 
n=2

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