Add 30/18 and 48/15
1st number: 1 12/18, 2nd number: 3 3/15
30/18 + 48/15 is 73/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
30/18 = 30 × 5/18 × 5 = 150/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
48/15 = 48 × 6/15 × 6 = 288/90 - Add the two like fractions:
150/90 + 288/90 = 150 + 288/90 = 438/90 - 438/90 simplified gives 73/15
- So, 30/18 + 48/15 = 73/15
In mixed form: 413/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/18+48/15 30/18+96/15 30/36+48/15 30/18+48/30 90/18+48/15 30/54+48/15 30/18+48/45 30/90+48/15 30/18+48/75