1 Answer

Charles Cooke · Answer 1 · 2022-05-23T18:13:34+0000

Answer: a = 65° b = 78° c = 37°

Steps:
(2x - 9) + (2x + 4) + x = 180°
5x - 5 = 180 °
5x = 185°
x = 37

(2x + 4)
2(37) + 4
74 + 4 = 78

(2x - 9)
2(37) - 9
74 - 9 = 65

Check:
65° + 78° + 37° = 180°
180° = 180°

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