2z-(21+z)=-31

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Solution for 2z-(21+z)=-31 equation:


2z-(21+z)=-31

We simplify the equation to the form, which is simple to understand 
2z-(21+z)=-31

Remove unnecessary parentheses
2z-21-1z=-31

We move all terms containing z to the left and all other terms to the right. 
+2z-1z=-31+21

We simplify left and right side of the equation. 
+1z=-10

We divide both sides of the equation by 1 to get z. 
z=-10

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