2 Answers

Rodolfo Neuber · Answer 1 · 2021-07-07T01:59:58+0000

Answer:

D

Explanation:

The sum of the 3 angles in a triangle = 180°

Sum the 3 given angles and equate to 180, thus

x + 5 + x + 7x - 5 = 180, that is

9x = 180 ( divide both sides by 9 )

x = 20 → D

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