Add 98/40 and 21/9
1st number: 2 18/40, 2nd number: 2 3/9
98/40 + 21/9 is 287/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 9 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
98/40 = 98 × 9/40 × 9 = 882/360 - Likewise, for the 2nd fraction, since 9 × 40 = 360,
21/9 = 21 × 40/9 × 40 = 840/360 - Add the two like fractions:
882/360 + 840/360 = 882 + 840/360 = 1722/360 - 1722/360 simplified gives 287/60
- So, 98/40 + 21/9 = 287/60
In mixed form: 447/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/40+42/9 98/80+21/9 98/40+21/18 98/40+63/9 98/40+21/27 98/40+21/45 98/40+21/63