3=(z-20)=3

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Solution for 3=(z-20)=3 equation: 



3=(z-20)=3

We move all terms to the left:

3-((z-20))=0



We calculate terms in parentheses: -((z-20)), so:

(z-20)

We get rid of parentheses

z-20

Back to the equation:

-(z-20)



We get rid of parentheses

-z+20+3=0

We add all the numbers together, and all the variables

-1z+23=0

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

-z=-23

z=-23/-1

z=+23

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