3s-9=12

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Solution for 3s-9=12 equation:


3s-9=12

We simplify the equation to the form, which is simple to understand 
3s-9=12

We move all terms containing s to the left and all other terms to the right. 
+3s=+12+9

We simplify left and right side of the equation. 
+3s=+21

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

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