Add 72/9 and 28/90
1st number: 8 0/9, 2nd number: 28/90
72/9 + 28/90 is 374/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
72/9 = 72 × 10/9 × 10 = 720/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
28/90 = 28 × 1/90 × 1 = 28/90 - Add the two like fractions:
720/90 + 28/90 = 720 + 28/90 = 748/90 - 748/90 simplified gives 374/45
- So, 72/9 + 28/90 = 374/45
In mixed form: 814/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/9+56/90 72/18+28/90 72/9+84/90 72/27+28/90 72/45+28/90 72/63+28/90