Add 21/24 and 40/10
1st number: 21/24, 2nd number: 4 0/10
21/24 + 40/10 is 39/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 10 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 10 × 12 = 120,
40/10 = 40 × 12/10 × 12 = 480/120 - Add the two like fractions:
105/120 + 480/120 = 105 + 480/120 = 585/120 - 585/120 simplified gives 39/8
- So, 21/24 + 40/10 = 39/8
In mixed form: 47/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/24+40/10 21/24+80/10 21/48+40/10 21/24+40/20 63/24+40/10 21/72+40/10 21/24+40/30 21/24+40/50 21/24+40/70