Add 3/12 and 3/40
3/12 + 3/40 is 13/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 12 × 10 = 120,
3/12 = 3 × 10/12 × 10 = 30/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
3/40 = 3 × 3/40 × 3 = 9/120 - Add the two like fractions:
30/120 + 9/120 = 30 + 9/120 = 39/120 - 39/120 simplified gives 13/40
- So, 3/12 + 3/40 = 13/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/12+3/40 3/12+6/40 3/24+3/40 3/12+3/80 9/12+3/40 3/12+9/40 3/36+3/40 15/12+3/40 3/12+15/40 3/60+3/40 21/12+3/40 3/12+21/40 3/84+3/40