Add 28/15 and 84/90
1st number: 1 13/15, 2nd number: 84/90
28/15 + 84/90 is 14/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
28/15 = 28 × 6/15 × 6 = 168/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
84/90 = 84 × 1/90 × 1 = 84/90 - Add the two like fractions:
168/90 + 84/90 = 168 + 84/90 = 252/90 - 252/90 simplified gives 14/5
- So, 28/15 + 84/90 = 14/5
In mixed form: 24/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/15+84/90 28/30+84/90 84/15+84/90 28/45+84/90 28/75+84/90