6z-21=3

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Solution for 6z-21=3 equation: 



6z-21=3

We move all terms to the left:

6z-21-(3)=0

We add all the numbers together, and all the variables

6z-24=0

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

6z=24

z=24/6

z=4

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