Add 20/15 and 98/84
1st number: 1 5/15, 2nd number: 1 14/84
20/15 + 98/84 is 5/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
20/15 = 20 × 28/15 × 28 = 560/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
98/84 = 98 × 5/84 × 5 = 490/420 - Add the two like fractions:
560/420 + 490/420 = 560 + 490/420 = 1050/420 - 1050/420 simplified gives 5/2
- So, 20/15 + 98/84 = 5/2
In mixed form: 21/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/15+98/84 20/30+98/84 60/15+98/84 20/45+98/84 20/75+98/84