Respuesta :
Answer:
the sum of triangle is 180°
(2x-15)+(x-5)+42°=180°
2x+x-15°-5°+42°=180°
3x+22°=180°
3x=180°-22
3x=158°
x=52.67°
Step-by-step explanation:
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3x+22=180
3x=168
x=56
2(56)-15=97
56-5=51
Angles are: 42, 97, and 51
3x=168
x=56
2(56)-15=97
56-5=51
Angles are: 42, 97, and 51