Add 18/8 and 18/15
1st number: 2 2/8, 2nd number: 1 3/15
18/8 + 18/15 is 69/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 15 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 8 × 15 = 120,
18/8 = 18 × 15/8 × 15 = 270/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
18/15 = 18 × 8/15 × 8 = 144/120 - Add the two like fractions:
270/120 + 144/120 = 270 + 144/120 = 414/120 - 414/120 simplified gives 69/20
- So, 18/8 + 18/15 = 69/20
In mixed form: 39/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/8+18/15 18/8+36/15 18/16+18/15 18/8+18/30 54/8+18/15 18/8+54/15 18/24+18/15 18/8+18/45 90/8+18/15 18/8+90/15 18/40+18/15 18/8+18/75 18/56+18/15