Add 2/12 and 9/42
2/12 + 9/42 is 8/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
2/12 = 2 × 7/12 × 7 = 14/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
9/42 = 9 × 2/42 × 2 = 18/84 - Add the two like fractions:
14/84 + 18/84 = 14 + 18/84 = 32/84 - 32/84 simplified gives 8/21
- So, 2/12 + 9/42 = 8/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/12+9/42 2/12+18/42 2/24+9/42 2/12+9/84 6/12+9/42 2/12+27/42 2/36+9/42 10/12+9/42 2/12+45/42 2/60+9/42 14/12+9/42 2/12+63/42 2/84+9/42