Answers

Subtract 7/63 from 27/21

1^st number: 1 6/21, 2^nd number: 7/63

27/21 - 7/63 is 74/63.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 63 is 63
   
   Next, find the equivalent fraction of both fractional numbers with denominator 63
2. For the 1st fraction, since 21 × 3 = 63,
   27/21 = 27 × 3/21 × 3 = 81/63
3. Likewise, for the 2nd fraction, since 63 × 1 = 63,
   7/63 = 7 × 1/63 × 1 = 7/63
4. Subtract the two like fractions:
   81/63 - 7/63 = 81 - 7/63 = 74/63
5. In mixed form: 111/63

MathStep (Works offline)

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

Related: ⁵⁴/₂₁-⁷/₆₃ ²⁷/₂₁-¹⁴/₆₃ ²⁷/₄₂-⁷/₆₃ ⁸¹/₂₁-⁷/₆₃ ²⁷/₂₁-²¹/₆₃ ²⁷/₆₃-⁷/₆₃ ²⁷/₂₁-³⁵/₆₃ ²⁷/₂₁-⁴⁹/₆₃

Subtract Fractions Calculator