3z-12=81

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Solution for 3z-12=81 equation: 



3z-12=81

We move all terms to the left:

3z-12-(81)=0

We add all the numbers together, and all the variables

3z-93=0

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

3z=93

z=93/3

z=31

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