Will mark brainliest, 60 points

Step-by-step explanation:

1. Given, u = 20 , x = 4 , y = 7 , z = 10

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2.

Multiplying or dividing a positive integer by any negative integer gives a negative integer

= - 8

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Hope I helped!

Best regards! :D

Step-by-step explanation:

u = 20, x = 4, y = 7, and z = 10.

Rewriting.

Multiplying.

Distributing the cube sign to the numerator and the denominator.

2

step-by-step explanation:

1+1=2

(23*2)-12=x     x=34

step-by-step explanation: