Answers

Subtract 49/24 from 90/42

1^st number: 2 6/42, 2^nd number: 2 1/24

90/42 - 49/24 is 17/168.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 24 is 168
   
   Next, find the equivalent fraction of both fractional numbers with denominator 168
2. For the 1st fraction, since 42 × 4 = 168,
   90/42 = 90 × 4/42 × 4 = 360/168
3. Likewise, for the 2nd fraction, since 24 × 7 = 168,
   49/24 = 49 × 7/24 × 7 = 343/168
4. Subtract the two like fractions:
   360/168 - 343/168 = 360 - 343/168 = 17/168

MathStep (Works offline)

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

Related: ⁹⁰/₄₂-⁹⁸/₂₄ ⁹⁰/₈₄-⁴⁹/₂₄ ⁹⁰/₄₂-⁴⁹/₄₈ ⁹⁰/₄₂-⁴⁹/₇₂

Subtract Fractions Calculator