Add 8/15 and 90/28
1st number: 8/15, 2nd number: 3 6/28
8/15 + 90/28 is 787/210.
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,
8/15 = 8 × 28/15 × 28 = 224/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
90/28 = 90 × 15/28 × 15 = 1350/420 - Add the two like fractions:
224/420 + 1350/420 = 224 + 1350/420 = 1574/420 - 1574/420 simplified gives 787/210
- So, 8/15 + 90/28 = 787/210
In mixed form: 3157/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/15+90/28 8/30+90/28 8/15+90/56 24/15+90/28 8/45+90/28 8/15+90/84 40/15+90/28 8/75+90/28 56/15+90/28