-4z+7=15

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Solution for -4z+7=15 equation: 



-4z+7=15

We move all terms to the left:

-4z+7-(15)=0

We add all the numbers together, and all the variables

-4z-8=0

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

-4z=8

z=8/-4

z=-2

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