Add 48/20 and 21/18
1st number: 2 8/20, 2nd number: 1 3/18
48/20 + 21/18 is 107/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 18 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
48/20 = 48 × 9/20 × 9 = 432/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
21/18 = 21 × 10/18 × 10 = 210/180 - Add the two like fractions:
432/180 + 210/180 = 432 + 210/180 = 642/180 - 642/180 simplified gives 107/30
- So, 48/20 + 21/18 = 107/30
In mixed form: 317/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/20+21/18 48/20+42/18 48/40+21/18 48/20+21/36 48/20+63/18 48/60+21/18 48/20+21/54 48/20+21/90