3/7+4/21-13/14= bantu aku jawab yaa

Bab Bilangan Pecahan
Matematika SD Kelas V

3/7 + 4/21 - 13/14 = (3 x 6)/(7 x 6) + (4 x 2)/(21 x 2) - (13 x 3)/(14 x 3)
                             = 18/42 + 8/42 - 39/42
                             = -13/42

3/7+4/21-13/14
= 18/42+8/42-39/42
= -13/42