Add 30/20 and 56/45
1st number: 1 10/20, 2nd number: 1 11/45
30/20 + 56/45 is 247/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
30/20 = 30 × 9/20 × 9 = 270/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
56/45 = 56 × 4/45 × 4 = 224/180 - Add the two like fractions:
270/180 + 224/180 = 270 + 224/180 = 494/180 - 494/180 simplified gives 247/90
- So, 30/20 + 56/45 = 247/90
In mixed form: 267/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/20+56/45 30/40+56/45 30/20+56/90 90/20+56/45 30/60+56/45