Add 4/8 and 21/72
4/8 + 21/72 is 19/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
4/8 = 4 × 9/8 × 9 = 36/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
21/72 = 21 × 1/72 × 1 = 21/72 - Add the two like fractions:
36/72 + 21/72 = 36 + 21/72 = 57/72 - 57/72 simplified gives 19/24
- So, 4/8 + 21/72 = 19/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/8+42/72 4/16+21/72 12/8+21/72 4/8+63/72 4/24+21/72 20/8+21/72 4/40+21/72 28/8+21/72 4/56+21/72