Add 56/30 and 21/18
1st number: 1 26/30, 2nd number: 1 3/18
56/30 + 21/18 is 91/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
56/30 = 56 × 3/30 × 3 = 168/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
21/18 = 21 × 5/18 × 5 = 105/90 - Add the two like fractions:
168/90 + 105/90 = 168 + 105/90 = 273/90 - 273/90 simplified gives 91/30
- So, 56/30 + 21/18 = 91/30
In mixed form: 31/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/30+42/18 56/60+21/18 56/30+21/36 56/30+63/18 56/90+21/18 56/30+21/54 56/30+21/90