Answers

Subtract 8/63 from 21/14

1^st number: 1 7/14, 2^nd number: 8/63

21/14 - 8/63 is 173/126.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 14 and 63 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 14 × 9 = 126,
   21/14 = 21 × 9/14 × 9 = 189/126
3. Likewise, for the 2nd fraction, since 63 × 2 = 126,
   8/63 = 8 × 2/63 × 2 = 16/126
4. Subtract the two like fractions:
   189/126 - 16/126 = 189 - 16/126 = 173/126
5. In mixed form: 147/126

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related: ⁴²/₁₄-⁸/₆₃ ²¹/₁₄-¹⁶/₆₃ ²¹/₂₈-⁸/₆₃ ⁶³/₁₄-⁸/₆₃ ²¹/₁₄-²⁴/₆₃ ²¹/₄₂-⁸/₆₃ ²¹/₁₄-⁴⁰/₆₃ ²¹/₇₀-⁸/₆₃ ²¹/₁₄-⁵⁶/₆₃ ²¹/₉₈-⁸/₆₃

Subtract Fractions Calculator