Add 98/20 and 28/45
1st number: 4 18/20, 2nd number: 28/45
98/20 + 28/45 is 497/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
98/20 = 98 × 9/20 × 9 = 882/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
28/45 = 28 × 4/45 × 4 = 112/180 - Add the two like fractions:
882/180 + 112/180 = 882 + 112/180 = 994/180 - 994/180 simplified gives 497/90
- So, 98/20 + 28/45 = 497/90
In mixed form: 547/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/20+56/45 98/40+28/45 98/20+28/90 98/20+84/45 98/60+28/45