Add 9/15 and 90/28
1st number: 9/15, 2nd number: 3 6/28
9/15 + 90/28 is 267/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
9/15 = 9 × 28/15 × 28 = 252/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
90/28 = 90 × 15/28 × 15 = 1350/420 - Add the two like fractions:
252/420 + 1350/420 = 252 + 1350/420 = 1602/420 - 1602/420 simplified gives 267/70
- So, 9/15 + 90/28 = 267/70
In mixed form: 357/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/15+90/28 9/30+90/28 9/15+90/56 27/15+90/28 9/45+90/28 9/15+90/84 45/15+90/28 9/75+90/28 63/15+90/28