Answer:
56°, 74°, 50°
Explanation:
x + x + 18 + x - 6 = 180
3x + 12 = 180
3x = 168
x = 56
56 + 18 = 74
56 - 6 = 50
X + X +18 + X-6 = 180
x= 56
x + 18 = 74
x - 6 =50
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