Add 3/40 and 12/14
3/40 + 12/14 is 261/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 14 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
3/40 = 3 × 7/40 × 7 = 21/280 - Likewise, for the 2nd fraction, since 14 × 20 = 280,
12/14 = 12 × 20/14 × 20 = 240/280 - Add the two like fractions:
21/280 + 240/280 = 21 + 240/280 = 261/280 - So, 3/40 + 12/14 = 261/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/40+12/14 3/40+24/14 3/80+12/14 3/40+12/28 9/40+12/14 3/40+36/14 3/40+12/42 15/40+12/14 3/40+60/14 3/40+12/70 21/40+12/14 3/40+84/14 3/40+12/98