Add 3/12 and 9/35
3/12 + 9/35 is 71/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 35 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
3/12 = 3 × 35/12 × 35 = 105/420 - Likewise, for the 2nd fraction, since 35 × 12 = 420,
9/35 = 9 × 12/35 × 12 = 108/420 - Add the two like fractions:
105/420 + 108/420 = 105 + 108/420 = 213/420 - 213/420 simplified gives 71/140
- So, 3/12 + 9/35 = 71/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/12+9/35 3/12+18/35 3/24+9/35 3/12+9/70 9/12+9/35 3/12+27/35 3/36+9/35 15/12+9/35 3/12+45/35 3/60+9/35 21/12+9/35 3/12+63/35 3/84+9/35