12-1z=9

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Solution for 12-1z=9 equation:


12-1z=9

We simplify the equation to the form, which is simple to understand 
12-1z=9

We move all terms containing z to the left and all other terms to the right. 
-1z=+9-12

We simplify left and right side of the equation. 
-1z=-3

We divide both sides of the equation by -1 to get z. 
z=3

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