Respuesta :

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Answer:

-2.25

Step-by-step explanation:

8(3-z)=42

24-8z=42

24=42+8z

-18=8z

z=-2.25

Answer:

z=-9/4

Step-by-step explanation:

8*(3-z)=42

24-8z=42

-8z=42-24

-8z=18

z=-18/8

z=-9/4