Answers

Subtract 9/8 from 28/7

1^st number: 4 0/7, 2^nd number: 1 1/8

28/7 - 9/8 is 23/8.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 7 and 8 is 56
   
   Next, find the equivalent fraction of both fractional numbers with denominator 56
2. For the 1st fraction, since 7 × 8 = 56,
   28/7 = 28 × 8/7 × 8 = 224/56
3. Likewise, for the 2nd fraction, since 8 × 7 = 56,
   9/8 = 9 × 7/8 × 7 = 63/56
4. Subtract the two like fractions:
   224/56 - 63/56 = 224 - 63/56 = 161/56
5. After reducing the fraction, the answer is 23/8
6. In mixed form: 27/8

MathStep (Works offline)

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

Related: ⁵⁶/₇-⁹/₈ ²⁸/₇-¹⁸/₈ ²⁸/₁₄-⁹/₈ ²⁸/₇-⁹/₁₆ ⁸⁴/₇-⁹/₈ ²⁸/₇-²⁷/₈ ²⁸/₂₁-⁹/₈ ²⁸/₇-⁹/₂₄ ²⁸/₇-⁴⁵/₈ ²⁸/₃₅-⁹/₈ ²⁸/₇-⁹/₄₀ ²⁸/₇-⁶³/₈ ²⁸/₄₉-⁹/₈ ²⁸/₇-⁹/₅₆

Subtract Fractions Calculator