Add 15/42 and 50/60
15/42 + 50/60 is 25/21.
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,
50/60 = 50 × 7/60 × 7 = 350/420 - Add the two like fractions:
150/420 + 350/420 = 150 + 350/420 = 500/420 - 500/420 simplified gives 25/21
- So, 15/42 + 50/60 = 25/21
In mixed form: 14/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/42+50/60 15/84+50/60 45/42+50/60 75/42+50/60