15z-15=30

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Solution for 15z-15=30 equation: 



15z-15=30

We move all terms to the left:

15z-15-(30)=0

We add all the numbers together, and all the variables

15z-45=0

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

15z=45

z=45/15

z=3

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