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23-09-2020
Mathematics

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4z - 8 = 20
Step by step

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23-09-2020

Answer:

z = 7

Step-by-step explanation:

4z - 8 = 20

Add 8 to each side

4z - 8+8 = 20+8

4z = 28

Divide each side by 4

4z/4 = 28/4

z = 7

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