z+30=2z-51

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Solution for z+30=2z-51 equation: 



z+30=2z-51

We move all terms to the left:

z+30-(2z-51)=0

We get rid of parentheses

z-2z+51+30=0

We add all the numbers together, and all the variables

-1z+81=0

We move all terms containing z to the left, all other terms to the right

-z=-81

z=-81/-1

z=+81

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