Question

In figure find angle X.
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Answer 1

Answer:

x =43

Step-by-step explanation:

as x + x+20 + x +31= 180

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Answer 2

Answer:

doing equation I am choosing y instead of X because X looks like multiply sign

y+31+y+20+y = 180 (linear angles)

3y+51=180

3y=180-51

3y = 129

y = 129/3

y = 43

means X = 43