30z-15=15

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Solution for 30z-15=15 equation: 



30z-15=15

We move all terms to the left:

30z-15-(15)=0

We add all the numbers together, and all the variables

30z-30=0

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

30z=30

z=30/30

z=1

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