Add 98/15 and 21/7
1st number: 6 8/15, 2nd number: 3 0/7
98/15 + 21/7 is 143/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 7 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 7 × 15 = 105,
21/7 = 21 × 15/7 × 15 = 315/105 - Add the two like fractions:
686/105 + 315/105 = 686 + 315/105 = 1001/105 - 1001/105 simplified gives 143/15
- So, 98/15 + 21/7 = 143/15
In mixed form: 98/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/15+42/7 98/30+21/7 98/15+21/14 98/15+63/7 98/45+21/7 98/75+21/7 98/15+21/35 98/15+21/49