Answers

Subtract 15/4 from 28/27

1^st number: 1 1/27, 2^nd number: 3 3/4

28/27 - 15/4 is -293/108.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 27 and 4 is 108
   
   Next, find the equivalent fraction of both fractional numbers with denominator 108
2. For the 1st fraction, since 27 × 4 = 108,
   28/27 = 28 × 4/27 × 4 = 112/108
3. Likewise, for the 2nd fraction, since 4 × 27 = 108,
   15/4 = 15 × 27/4 × 27 = 405/108
4. Subtract the two like fractions:
   112/108 - 405/108 = 112 - 405/108 = -293/108

MathStep (Works offline)

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

Related: ⁵⁶/₂₇-¹⁵/₄ ²⁸/₂₇-³⁰/₄ ²⁸/₅₄-¹⁵/₄ ²⁸/₂₇-¹⁵/₈ ⁸⁴/₂₇-¹⁵/₄ ²⁸/₂₇-⁴⁵/₄ ²⁸/₈₁-¹⁵/₄ ²⁸/₂₇-¹⁵/₁₂ ²⁸/₂₇-⁷⁵/₄ ²⁸/₂₇-¹⁵/₂₀ ²⁸/₂₇-¹⁵/₂₈

Subtract Fractions Calculator