Add 20/4 and 15/20
1st number: 5 0/4, 2nd number: 15/20
20/4 + 15/20 is 23/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
20/4 = 20 × 5/4 × 5 = 100/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
15/20 = 15 × 1/20 × 1 = 15/20 - Add the two like fractions:
100/20 + 15/20 = 100 + 15/20 = 115/20 - 115/20 simplified gives 23/4
- So, 20/4 + 15/20 = 23/4
In mixed form: 53/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/4+15/20 20/4+30/20 20/8+15/20 20/4+15/40 60/4+15/20 20/4+45/20 20/12+15/20 20/4+15/60 20/4+75/20 20/28+15/20