Add 15/42 and 28/60
15/42 + 28/60 is 173/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 42 × 10 = 420,
15/42 = 15 × 10/42 × 10 = 150/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
28/60 = 28 × 7/60 × 7 = 196/420 - Add the two like fractions:
150/420 + 196/420 = 150 + 196/420 = 346/420 - 346/420 simplified gives 173/210
- So, 15/42 + 28/60 = 173/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/42+28/60 15/42+56/60 15/84+28/60 45/42+28/60 15/42+84/60 75/42+28/60