3z-39=42

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Solution for 3z-39=42 equation: 



3z-39=42

We move all terms to the left:

3z-39-(42)=0

We add all the numbers together, and all the variables

3z-81=0

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

3z=81

z=81/3

z=27

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