Add 9/20 and 18/15
1st number: 9/20, 2nd number: 1 3/15
9/20 + 18/15 is 33/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
9/20 = 9 × 3/20 × 3 = 27/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
18/15 = 18 × 4/15 × 4 = 72/60 - Add the two like fractions:
27/60 + 72/60 = 27 + 72/60 = 99/60 - 99/60 simplified gives 33/20
- So, 9/20 + 18/15 = 33/20
In mixed form: 113/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/20+18/15 9/20+36/15 9/40+18/15 9/20+18/30 27/20+18/15 9/20+54/15 9/60+18/15 9/20+18/45 45/20+18/15 9/20+90/15 9/20+18/75 63/20+18/15