Tolong banget jawabin skrang ntik di ksik poin bnyak
Jawab:
a. 2x + x = 180°
3x = 180°
x = 60°
b. 2x + 40° + 34° = 180°
2x + 40° = 180° – 34°
2x = 146° – 40°
2x = 106°
x = 53°
c. 30° + 2x + 60° = 180°
2x = (180°- 60°)-30°
2x = 120° – 30°
2x = 90°
x = 45°
d. 3x + 2x + x = 90°
6x = 90°
x = 15°