Add 21/36 and 98/72
1st number: 21/36, 2nd number: 1 26/72
21/36 + 98/72 is 35/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 36 × 2 = 72,
21/36 = 21 × 2/36 × 2 = 42/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
98/72 = 98 × 1/72 × 1 = 98/72 - Add the two like fractions:
42/72 + 98/72 = 42 + 98/72 = 140/72 - 140/72 simplified gives 35/18
- So, 21/36 + 98/72 = 35/18
In mixed form: 117/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/36+98/72 21/72+98/72 63/36+98/72