Add 15/42 and 56/60
15/42 + 56/60 is 271/210.
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,
56/60 = 56 × 7/60 × 7 = 392/420 - Add the two like fractions:
150/420 + 392/420 = 150 + 392/420 = 542/420 - 542/420 simplified gives 271/210
- So, 15/42 + 56/60 = 271/210
In mixed form: 161/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/42+56/60 15/84+56/60 45/42+56/60 75/42+56/60