Add 98/15 and 4/21
1st number: 6 8/15, 2nd number: 4/21
98/15 + 4/21 is 706/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
98/15 = 98 × 7/15 × 7 = 686/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
4/21 = 4 × 5/21 × 5 = 20/105 - Add the two like fractions:
686/105 + 20/105 = 686 + 20/105 = 706/105 - So, 98/15 + 4/21 = 706/105
In mixed form: 676/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/15+8/21 98/30+4/21 98/15+4/42 98/15+12/21 98/45+4/21 98/15+4/63 98/15+20/21 98/75+4/21 98/15+28/21