Add 45/28 and 4/15
1st number: 1 17/28, 2nd number: 4/15
45/28 + 4/15 is 787/420.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 15 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
45/28 = 45 × 15/28 × 15 = 675/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
4/15 = 4 × 28/15 × 28 = 112/420 - Add the two like fractions:
675/420 + 112/420 = 675 + 112/420 = 787/420 - So, 45/28 + 4/15 = 787/420
In mixed form: 1367/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/28+4/15 45/28+8/15 45/56+4/15 45/28+4/30 45/28+12/15 45/84+4/15 45/28+4/45 45/28+20/15 45/28+4/75 45/28+28/15