Add 16/90 and 21/18
1st number: 16/90, 2nd number: 1 3/18
16/90 + 21/18 is 121/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
16/90 = 16 × 1/90 × 1 = 16/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
21/18 = 21 × 5/18 × 5 = 105/90 - Add the two like fractions:
16/90 + 105/90 = 16 + 105/90 = 121/90 - So, 16/90 + 21/18 = 121/90
In mixed form: 131/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/90+21/18 16/90+42/18 16/90+21/36 48/90+21/18 16/90+63/18 16/90+21/54 80/90+21/18 16/90+21/90