Odpowiedź :
a)
3α + α + 40° = 180°
3α + α = 180° - 40°
4α = 140°
α = 35°
3α = 105°
b)
α + 2α - 4 = 14
α + 2α = 14 + 4
3α = 18
α = 6
2α - 4 = 2 * 6 - 4 = 12 - 4 = 8
a)
3α + α + 40° = 180°
3α + α = 180° - 40°
4α = 140°
α = 35°
3α = 105°
b)
α + 2α - 4 = 14
α + 2α = 14 + 4
3α = 18
α = 6
2α - 4 = 2 * 6 - 4 = 12 - 4 = 8