Add 8/40 and 81/60
1st number: 8/40, 2nd number: 1 21/60
8/40 + 81/60 is 31/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 60 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
8/40 = 8 × 3/40 × 3 = 24/120 - Likewise, for the 2nd fraction, since 60 × 2 = 120,
81/60 = 81 × 2/60 × 2 = 162/120 - Add the two like fractions:
24/120 + 162/120 = 24 + 162/120 = 186/120 - 186/120 simplified gives 31/20
- So, 8/40 + 81/60 = 31/20
In mixed form: 111/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/40+81/60 8/80+81/60 24/40+81/60 56/40+81/60