Answers

Subtract 16/84 from 24/21

1^st number: 1 3/21, 2^nd number: 16/84

24/21 - 16/84 is 20/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 84 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 21 × 4 = 84,
   24/21 = 24 × 4/21 × 4 = 96/84
3. Likewise, for the 2nd fraction, since 84 × 1 = 84,
   16/84 = 16 × 1/84 × 1 = 16/84
4. Subtract the two like fractions:
   96/84 - 16/84 = 96 - 16/84 = 80/84
5. After reducing the fraction, the answer is 20/21

MathStep (Works offline)

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

Related: ⁴⁸/₂₁-¹⁶/₈₄ ²⁴/₂₁-³²/₈₄ ²⁴/₄₂-¹⁶/₈₄ ⁷²/₂₁-¹⁶/₈₄ ²⁴/₂₁-⁴⁸/₈₄ ²⁴/₆₃-¹⁶/₈₄ ²⁴/₂₁-⁸⁰/₈₄

Subtract Fractions Calculator