Add 21/30 and 36/24
1st number: 21/30, 2nd number: 1 12/24
21/30 + 36/24 is 11/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
21/30 = 21 × 4/30 × 4 = 84/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
36/24 = 36 × 5/24 × 5 = 180/120 - Add the two like fractions:
84/120 + 180/120 = 84 + 180/120 = 264/120 - 264/120 simplified gives 11/5
- So, 21/30 + 36/24 = 11/5
In mixed form: 21/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/30+36/24 21/30+72/24 21/60+36/24 21/30+36/48 63/30+36/24 21/90+36/24 21/30+36/72