2z--12=20

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Solution for 2z--12=20 equation:


2z--12=20

We simplify the equation to the form, which is simple to understand 
2z+12=20

We move all terms containing z to the left and all other terms to the right. 
+2z=+20-12

We simplify left and right side of the equation. 
+2z=+8

We divide both sides of the equation by 2 to get z. 
z=4

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