Answers

Subtract 28/40 from 48/21

1^st number: 2 6/21, 2^nd number: 28/40

48/21 - 28/40 is 111/70.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 40 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 21 × 40 = 840,
   48/21 = 48 × 40/21 × 40 = 1920/840
3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
   28/40 = 28 × 21/40 × 21 = 588/840
4. Subtract the two like fractions:
   1920/840 - 588/840 = 1920 - 588/840 = 1332/840
5. After reducing the fraction, the answer is 111/70
6. In mixed form: 141/70

MathStep (Works offline)

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

Related: ⁹⁶/₂₁-²⁸/₄₀ ⁴⁸/₂₁-⁵⁶/₄₀ ⁴⁸/₄₂-²⁸/₄₀ ⁴⁸/₂₁-²⁸/₈₀ ⁴⁸/₂₁-⁸⁴/₄₀ ⁴⁸/₆₃-²⁸/₄₀

Subtract Fractions Calculator