3/4 - 4/9 = *pakai cara

3/4 - 4/9 = 27/36 - 16/36 = 11/36

Disamakan penyebutnya dulu:
3/4 = 3 x 9 / 4 x 9 = 27/36
4/9 = 4 x 4 / 9 x 4 = 16/36

27/36 - 16/36 = 11/36