Answers

Subtract 70/49 from 20/24

1^st number: 20/24, 2^nd number: 1 21/49

20/24 - 70/49 is -25/42.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 24 and 49 is 1176
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1176
2. For the 1st fraction, since 24 × 49 = 1176,
   20/24 = 20 × 49/24 × 49 = 980/1176
3. Likewise, for the 2nd fraction, since 49 × 24 = 1176,
   70/49 = 70 × 24/49 × 24 = 1680/1176
4. Subtract the two like fractions:
   980/1176 - 1680/1176 = 980 - 1680/1176 = -700/1176
5. After reducing the fraction, the answer is -25/42

MathStep (Works offline)

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

Related: ⁴⁰/₂₄-⁷⁰/₄₉ ²⁰/₄₈-⁷⁰/₄₉ ²⁰/₂₄-⁷⁰/₉₈ ⁶⁰/₂₄-⁷⁰/₄₉ ²⁰/₇₂-⁷⁰/₄₉

Subtract Fractions Calculator