Answers

Subtract 20/49 from 15/84

15/84 - 20/49 is -45/196.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 49 is 588
   
   Next, find the equivalent fraction of both fractional numbers with denominator 588
2. For the 1st fraction, since 84 × 7 = 588,
   15/84 = 15 × 7/84 × 7 = 105/588
3. Likewise, for the 2nd fraction, since 49 × 12 = 588,
   20/49 = 20 × 12/49 × 12 = 240/588
4. Subtract the two like fractions:
   105/588 - 240/588 = 105 - 240/588 = -135/588
5. After reducing the fraction, the answer is -45/196

MathStep (Works offline)

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

Related: ³⁰/₈₄-²⁰/₄₉ ¹⁵/₈₄-⁴⁰/₄₉ ¹⁵/₈₄-²⁰/₉₈ ⁴⁵/₈₄-²⁰/₄₉ ¹⁵/₈₄-⁶⁰/₄₉ ⁷⁵/₈₄-²⁰/₄₉

Subtract Fractions Calculator