Add 70/42 and 24/60
1st number: 1 28/42, 2nd number: 24/60
70/42 + 24/60 is 31/15.
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,
70/42 = 70 × 10/42 × 10 = 700/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
24/60 = 24 × 7/60 × 7 = 168/420 - Add the two like fractions:
700/420 + 168/420 = 700 + 168/420 = 868/420 - 868/420 simplified gives 31/15
- So, 70/42 + 24/60 = 31/15
In mixed form: 21/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/42+48/60 70/84+24/60 70/42+72/60