Add 50/90 and 21/18
1st number: 50/90, 2nd number: 1 3/18
50/90 + 21/18 is 31/18.
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,
50/90 = 50 × 1/90 × 1 = 50/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
21/18 = 21 × 5/18 × 5 = 105/90 - Add the two like fractions:
50/90 + 105/90 = 50 + 105/90 = 155/90 - 155/90 simplified gives 31/18
- So, 50/90 + 21/18 = 31/18
In mixed form: 113/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/90+42/18 50/90+21/36 50/90+63/18 50/90+21/54 50/90+21/90