Question

Tolong dibantu plus caranya​

Answer 1

3x-60°=x

2x=60°

x=30°

y=180°-30°

y=150°

Answer 2

2 (3x-60°) + 2y = 360°

6x - 120° + 2y = 360°

6x + 2y = 360° + 120°

6x + 2y = 480° ......(1)

x + y = 180° ....(2)

Y = 180° - x

Substitusikan:

6x + 2y = 480°

6x + 2(180° - x) = 480°

6x + 360° - 2x = 480°

4x = 480° - 360°

4x = 120°

x = 120°/4 = 30°

y = 180° - x = 180° - 30° = 150°

Jawabannya C.150°

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