Add 3/12 and 3/7
3/12 + 3/7 is 19/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
3/12 = 3 × 7/12 × 7 = 21/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
3/7 = 3 × 12/7 × 12 = 36/84 - Add the two like fractions:
21/84 + 36/84 = 21 + 36/84 = 57/84 - 57/84 simplified gives 19/28
- So, 3/12 + 3/7 = 19/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/12+3/7 3/12+6/7 3/24+3/7 3/12+3/14 9/12+3/7 3/12+9/7 3/36+3/7 3/12+3/21 15/12+3/7 3/12+15/7 3/60+3/7 3/12+3/35 21/12+3/7 3/12+21/7 3/84+3/7 3/12+3/49