7z-20-18z=20-9z

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Solution for 7z-20-18z=20-9z equation:


7z-20-18z=20-9z

We simplify the equation to the form, which is simple to understand 
7z-20-18z=20-9z

We move all terms containing z to the left and all other terms to the right. 
+7z-18z+9z=+20+20

We simplify left and right side of the equation. 
-2z=+40

We divide both sides of the equation by -2 to get z. 
z=-20

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