Answers

Subtract 40/49 from 90/84

1^st number: 1 6/84, 2^nd number: 40/49

90/84 - 40/49 is 25/98.

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,
   90/84 = 90 × 7/84 × 7 = 630/588
3. Likewise, for the 2nd fraction, since 49 × 12 = 588,
   40/49 = 40 × 12/49 × 12 = 480/588
4. Subtract the two like fractions:
   630/588 - 480/588 = 630 - 480/588 = 150/588
5. After reducing the fraction, the answer is 25/98

MathStep (Works offline)

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

Related: ⁹⁰/₈₄-⁸⁰/₄₉ ⁹⁰/₈₄-⁴⁰/₉₈

Subtract Fractions Calculator