Add 10/20 and 15/30
10/20 + 15/30 is 1/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
10/20 = 10 × 3/20 × 3 = 30/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
15/30 = 15 × 2/30 × 2 = 30/60 - Add the two like fractions:
30/60 + 30/60 = 30 + 30/60 = 60/60 - 60/60 simplified gives 1/1
- So, 10/20 + 15/30 = 1/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/40+15/30 10/20+15/60 30/20+15/30 10/20+45/30 10/60+15/30 10/20+15/90 50/20+15/30 10/20+75/30 70/20+15/30