Dua pertiga tolak lima perenam

2/3 - 5/6
= (2×2)/(3×2) - 5/6
= 4/6 - 5/6
= - 1/6

Bab Bilangan Pecahan
Matematika SD Kelas V

2/3 - 5/6 = (2 x 6 - 3 x 5)/(3 x 6)
2/3 - 5/6 = (12 - 15)/18
2/3 - 5/6 = -3/18
2/3 - 5/6 = -1/6