Add 56/4 and 21/90
1st number: 14 0/4, 2nd number: 21/90
56/4 + 21/90 is 427/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
56/4 = 56 × 45/4 × 45 = 2520/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
21/90 = 21 × 2/90 × 2 = 42/180 - Add the two like fractions:
2520/180 + 42/180 = 2520 + 42/180 = 2562/180 - 2562/180 simplified gives 427/30
- So, 56/4 + 21/90 = 427/30
In mixed form: 147/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/4+42/90 56/8+21/90 56/4+63/90 56/12+21/90 56/20+21/90 56/28+21/90