Add 8/40 and 3/12
8/40 + 3/12 is 9/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 12 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 12 × 10 = 120,
3/12 = 3 × 10/12 × 10 = 30/120 - Add the two like fractions:
24/120 + 30/120 = 24 + 30/120 = 54/120 - 54/120 simplified gives 9/20
- So, 8/40 + 3/12 = 9/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/40+3/12 8/40+6/12 8/80+3/12 8/40+3/24 24/40+3/12 8/40+9/12 8/40+3/36 8/40+15/12 8/40+3/60 56/40+3/12 8/40+21/12 8/40+3/84