Add 18/60 and 21/24
18/60 + 21/24 is 47/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 60 × 2 = 120,
18/60 = 18 × 2/60 × 2 = 36/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
21/24 = 21 × 5/24 × 5 = 105/120 - Add the two like fractions:
36/120 + 105/120 = 36 + 105/120 = 141/120 - 141/120 simplified gives 47/40
- So, 18/60 + 21/24 = 47/40
In mixed form: 17/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/60+21/24 18/60+42/24 18/60+21/48 54/60+21/24 18/60+63/24 18/60+21/72 90/60+21/24