Add 5/72 and 21/8
1st number: 5/72, 2nd number: 2 5/8
5/72 + 21/8 is 97/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
5/72 = 5 × 1/72 × 1 = 5/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
21/8 = 21 × 9/8 × 9 = 189/72 - Add the two like fractions:
5/72 + 189/72 = 5 + 189/72 = 194/72 - 194/72 simplified gives 97/36
- So, 5/72 + 21/8 = 97/36
In mixed form: 225/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/72+21/8 5/72+42/8 5/72+21/16 15/72+21/8 5/72+63/8 5/72+21/24 25/72+21/8 5/72+21/40 35/72+21/8 5/72+21/56