Add 8/40 and 81/30
1st number: 8/40, 2nd number: 2 21/30
8/40 + 81/30 is 29/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 30 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 30 × 4 = 120,
81/30 = 81 × 4/30 × 4 = 324/120 - Add the two like fractions:
24/120 + 324/120 = 24 + 324/120 = 348/120 - 348/120 simplified gives 29/10
- So, 8/40 + 81/30 = 29/10
In mixed form: 29/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/40+81/30 8/80+81/30 8/40+81/60 24/40+81/30 8/40+81/90 56/40+81/30