Add 6/8 and 18/15
1st number: 6/8, 2nd number: 1 3/15
6/8 + 18/15 is 39/20.
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,
6/8 = 6 × 15/8 × 15 = 90/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
18/15 = 18 × 8/15 × 8 = 144/120 - Add the two like fractions:
90/120 + 144/120 = 90 + 144/120 = 234/120 - 234/120 simplified gives 39/20
- So, 6/8 + 18/15 = 39/20
In mixed form: 119/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/8+18/15 6/8+36/15 6/16+18/15 6/8+18/30 18/8+18/15 6/8+54/15 6/24+18/15 6/8+18/45 30/8+18/15 6/8+90/15 6/40+18/15 6/8+18/75 42/8+18/15 6/56+18/15