Add 21/24 and 75/30
1st number: 21/24, 2nd number: 2 15/30
21/24 + 75/30 is 27/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 30 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 24 × 5 = 120,
21/24 = 21 × 5/24 × 5 = 105/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
75/30 = 75 × 4/30 × 4 = 300/120 - Add the two like fractions:
105/120 + 300/120 = 105 + 300/120 = 405/120 - 405/120 simplified gives 27/8
- So, 21/24 + 75/30 = 27/8
In mixed form: 33/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/24+75/30 21/48+75/30 21/24+75/60 63/24+75/30 21/72+75/30 21/24+75/90