4z-40=80

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Solution for 4z-40=80 equation: 



4z-40=80

We move all terms to the left:

4z-40-(80)=0

We add all the numbers together, and all the variables

4z-120=0

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

4z=120

z=120/4

z=30

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