z+27=2z-15

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Solution for z+27=2z-15 equation: 



z+27=2z-15

We move all terms to the left:

z+27-(2z-15)=0

We get rid of parentheses

z-2z+15+27=0

We add all the numbers together, and all the variables

-1z+42=0

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

-z=-42

z=-42/-1

z=+42

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