Add 7/10 and 21/24
7/10 + 21/24 is 63/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 10 × 12 = 120,
7/10 = 7 × 12/10 × 12 = 84/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
21/24 = 21 × 5/24 × 5 = 105/120 - Add the two like fractions:
84/120 + 105/120 = 84 + 105/120 = 189/120 - 189/120 simplified gives 63/40
- So, 7/10 + 21/24 = 63/40
In mixed form: 123/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/10+21/24 7/10+42/24 7/20+21/24 7/10+21/48 21/10+21/24 7/10+63/24 7/30+21/24 7/10+21/72 35/10+21/24 7/50+21/24 49/10+21/24 7/70+21/24