2z-7z=-15

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



2z-7z=-15

We move all terms to the left:

2z-7z-(-15)=0

We add all the numbers together, and all the variables

-5z+15=0

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

-5z=-15

z=-15/-5

z=+3

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