2z-15=9=7

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Solution for 2z-15=9=7 equation: 



2z-15=9=7

We move all terms to the left:

2z-15-(9)=0

We add all the numbers together, and all the variables

2z-24=0

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

2z=24

z=24/2

z=12

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