Add 20/30 and 20/15
1st number: 20/30, 2nd number: 1 5/15
20/30 + 20/15 is 2/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 15 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 30 × 1 = 30,
20/30 = 20 × 1/30 × 1 = 20/30 - Likewise, for the 2nd fraction, since 15 × 2 = 30,
20/15 = 20 × 2/15 × 2 = 40/30 - Add the two like fractions:
20/30 + 40/30 = 20 + 40/30 = 60/30 - 60/30 simplified gives 2/1
- So, 20/30 + 20/15 = 2/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/30+20/15 20/30+40/15 20/60+20/15 20/30+20/30 60/30+20/15 20/30+60/15 20/90+20/15 20/30+20/45 20/30+20/75