Mohon di bantu.cara penyelesaian soal ini 2/9-1/7-1/14

Bab Bilangan Pecahan
Matematika SD Kelas V

2/9 - 1/7 - 1/14 = 2/9 - 2/14 - 1/14
                         = 2/9 - 3/14
                         = (2 x 14 - 9 x 3)/(9 x 14)
                         = (28 - 27) / 126
                         = 1/126

²/9- ¹/7 - ¹/14 = ²/9 - ²/14 - ¹/14
= ²/9 - ³/14
= (2 x 14 - 9x3) /(9 x 14)
= (28 - 27) / 126
= ¹/126.