Add 18/7 and 63/20
1st number: 2 4/7, 2nd number: 3 3/20
18/7 + 63/20 is 801/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 7 × 20 = 140,
18/7 = 18 × 20/7 × 20 = 360/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
63/20 = 63 × 7/20 × 7 = 441/140 - Add the two like fractions:
360/140 + 441/140 = 360 + 441/140 = 801/140 - So, 18/7 + 63/20 = 801/140
In mixed form: 5101/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/7+63/20 18/14+63/20 18/7+63/40 54/7+63/20 18/21+63/20 18/7+63/60 90/7+63/20 18/35+63/20 18/49+63/20