Add 18/15 and 72/8
1st number: 1 3/15, 2nd number: 9 0/8
18/15 + 72/8 is 51/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
18/15 = 18 × 8/15 × 8 = 144/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
72/8 = 72 × 15/8 × 15 = 1080/120 - Add the two like fractions:
144/120 + 1080/120 = 144 + 1080/120 = 1224/120 - 1224/120 simplified gives 51/5
- So, 18/15 + 72/8 = 51/5
In mixed form: 101/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/15+72/8 18/30+72/8 18/15+72/16 54/15+72/8 18/45+72/8 18/15+72/24 90/15+72/8 18/75+72/8 18/15+72/40 18/15+72/56