Answers

Subtract 24/42 from 42/20

1^st number: 2 2/20, 2^nd number: 24/42

42/20 - 24/42 is 107/70.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 42 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 20 × 21 = 420,
   42/20 = 42 × 21/20 × 21 = 882/420
3. Likewise, for the 2nd fraction, since 42 × 10 = 420,
   24/42 = 24 × 10/42 × 10 = 240/420
4. Subtract the two like fractions:
   882/420 - 240/420 = 882 - 240/420 = 642/420
5. After reducing the fraction, the answer is 107/70
6. In mixed form: 137/70

MathStep (Works offline)

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

Related: ⁸⁴/₂₀-²⁴/₄₂ ⁴²/₂₀-⁴⁸/₄₂ ⁴²/₄₀-²⁴/₄₂ ⁴²/₂₀-²⁴/₈₄ ⁴²/₂₀-⁷²/₄₂ ⁴²/₆₀-²⁴/₄₂

Subtract Fractions Calculator