Add 3/72 and 21/36
3/72 + 21/36 is 5/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 36 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
3/72 = 3 × 1/72 × 1 = 3/72 - Likewise, for the 2nd fraction, since 36 × 2 = 72,
21/36 = 21 × 2/36 × 2 = 42/72 - Add the two like fractions:
3/72 + 42/72 = 3 + 42/72 = 45/72 - 45/72 simplified gives 5/8
- So, 3/72 + 21/36 = 5/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/72+21/36 3/72+42/36 3/72+21/72 9/72+21/36 3/72+63/36 15/72+21/36 21/72+21/36