Add 24/60 and 12/21
24/60 + 12/21 is 34/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 21 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
24/60 = 24 × 7/60 × 7 = 168/420 - Likewise, for the 2nd fraction, since 21 × 20 = 420,
12/21 = 12 × 20/21 × 20 = 240/420 - Add the two like fractions:
168/420 + 240/420 = 168 + 240/420 = 408/420 - 408/420 simplified gives 34/35
- So, 24/60 + 12/21 = 34/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/60+12/21 24/60+24/21 24/60+12/42 72/60+12/21 24/60+36/21 24/60+12/63 24/60+60/21 24/60+84/21