Add 24/21 and 70/60
1st number: 1 3/21, 2nd number: 1 10/60
24/21 + 70/60 is 97/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 21 × 20 = 420,
24/21 = 24 × 20/21 × 20 = 480/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
70/60 = 70 × 7/60 × 7 = 490/420 - Add the two like fractions:
480/420 + 490/420 = 480 + 490/420 = 970/420 - 970/420 simplified gives 97/42
- So, 24/21 + 70/60 = 97/42
In mixed form: 213/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/21+70/60 24/42+70/60 72/21+70/60 24/63+70/60