Add 15/20 and 10/5
1st number: 15/20, 2nd number: 2 0/5
15/20 + 10/5 is 11/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 5 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 20 × 1 = 20,
15/20 = 15 × 1/20 × 1 = 15/20 - Likewise, for the 2nd fraction, since 5 × 4 = 20,
10/5 = 10 × 4/5 × 4 = 40/20 - Add the two like fractions:
15/20 + 40/20 = 15 + 40/20 = 55/20 - 55/20 simplified gives 11/4
- So, 15/20 + 10/5 = 11/4
In mixed form: 23/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/20+10/5 15/20+20/5 15/40+10/5 45/20+10/5 15/20+30/5 15/60+10/5 15/20+10/15 75/20+10/5 15/20+50/5 15/20+10/25 15/20+70/5 15/20+10/35