Add 98/5 and 21/28
1st number: 19 3/5, 2nd number: 21/28
98/5 + 21/28 is 407/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 5 × 28 = 140,
98/5 = 98 × 28/5 × 28 = 2744/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
21/28 = 21 × 5/28 × 5 = 105/140 - Add the two like fractions:
2744/140 + 105/140 = 2744 + 105/140 = 2849/140 - 2849/140 simplified gives 407/20
- So, 98/5 + 21/28 = 407/20
In mixed form: 207/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/5+42/28 98/10+21/28 98/5+21/56 98/5+63/28 98/15+21/28 98/5+21/84 98/25+21/28 98/35+21/28