7n-9=12

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Solution for 7n-9=12 equation:


7n-9=12

We simplify the equation to the form, which is simple to understand 
7n-9=12

We move all terms containing n to the left and all other terms to the right. 
+7n=+12+9

We simplify left and right side of the equation. 
+7n=+21

We divide both sides of the equation by 7 to get n. 
n=3

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