Question

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Answer 1

Answer:

z= 180-40 = 140

Step-by-step explanation:

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Answer 2

Angle x = 180 - 45 = 135
Angle x = 135 degrees

Angle y = 40 degrees

Angle z = 180 - 40 = 140
Angle z = 140 degrees

Sorry but I can’t explain the whole method.
Hope this helps.