Add 15/5 and 5/20
1st number: 3 0/5, 2nd number: 5/20
15/5 + 5/20 is 13/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 5 × 4 = 20,
15/5 = 15 × 4/5 × 4 = 60/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
5/20 = 5 × 1/20 × 1 = 5/20 - Add the two like fractions:
60/20 + 5/20 = 60 + 5/20 = 65/20 - 65/20 simplified gives 13/4
- So, 15/5 + 5/20 = 13/4
In mixed form: 31/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/5+5/20 15/5+10/20 15/10+5/20 15/5+5/40 45/5+5/20 15/5+15/20 15/5+5/60 75/5+5/20 15/5+25/20 15/25+5/20 15/5+35/20 15/35+5/20