Add 8/40 and 21/24
8/40 + 21/24 is 43/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
8/40 = 8 × 3/40 × 3 = 24/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
21/24 = 21 × 5/24 × 5 = 105/120 - Add the two like fractions:
24/120 + 105/120 = 24 + 105/120 = 129/120 - 129/120 simplified gives 43/40
- So, 8/40 + 21/24 = 43/40
In mixed form: 13/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/40+21/24 8/40+42/24 8/80+21/24 8/40+21/48 24/40+21/24 8/40+63/24 8/40+21/72 56/40+21/24