Add 15/60 and 9/28
15/60 + 9/28 is 4/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
15/60 = 15 × 7/60 × 7 = 105/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
9/28 = 9 × 15/28 × 15 = 135/420 - Add the two like fractions:
105/420 + 135/420 = 105 + 135/420 = 240/420 - 240/420 simplified gives 4/7
- So, 15/60 + 9/28 = 4/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/60+9/28 15/60+18/28 15/60+9/56 45/60+9/28 15/60+27/28 15/60+9/84 75/60+9/28 15/60+45/28 15/60+63/28