Add 18/8 and 81/60
1st number: 2 2/8, 2nd number: 1 21/60
18/8 + 81/60 is 18/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 60 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 60 × 2 = 120,
81/60 = 81 × 2/60 × 2 = 162/120 - Add the two like fractions:
270/120 + 162/120 = 270 + 162/120 = 432/120 - 432/120 simplified gives 18/5
- So, 18/8 + 81/60 = 18/5
In mixed form: 33/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/8+81/60 18/16+81/60 54/8+81/60 18/24+81/60 90/8+81/60 18/40+81/60 18/56+81/60