z+30=2z

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Solution for z+30=2z equation: 



z+30=2z

We move all terms to the left:

z+30-(2z)=0

We add all the numbers together, and all the variables

-1z+30=0

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

-z=-30

z=-30/-1

z=+30

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