7s-12=9

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Solution for 7s-12=9 equation:


7s-12=9

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

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

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

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

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