Add 20/84 and 21/98
20/84 + 21/98 is 19/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 98 is 588
Next, find the equivalent fraction of both fractional numbers with denominator 588 - For the 1st fraction, since 84 × 7 = 588,
20/84 = 20 × 7/84 × 7 = 140/588 - Likewise, for the 2nd fraction, since 98 × 6 = 588,
21/98 = 21 × 6/98 × 6 = 126/588 - Add the two like fractions:
140/588 + 126/588 = 140 + 126/588 = 266/588 - 266/588 simplified gives 19/42
- So, 20/84 + 21/98 = 19/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/84+21/98 20/84+42/98 60/84+21/98 20/84+63/98