5/7 - 1/3 + 1/7 = pakai cara ya!

  5/7 - 1/3 + 1/7
=15/21 - 7/21 + 3/21
=8/21 + 3/21
= 11/21

5/7 - 1/3 + 1/7 => samakan penyebut dari 7, dan 3 = 21
= (3 × 5) /21 - (1 × 7) / 21 + (1 × 3) /21
= 15/21 - 7/21 + 3/21
= (15 - 7 + 3) / (21)
= 11/21