15z+20=-40

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Solution for 15z+20=-40 equation: 



15z+20=-40

We move all terms to the left:

15z+20-(-40)=0

We add all the numbers together, and all the variables

15z+60=0

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

15z=-60

z=-60/15

z=-4

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