Add 15/42 and 12/27
15/42 + 12/27 is 101/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 27 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 42 × 9 = 378,
15/42 = 15 × 9/42 × 9 = 135/378 - Likewise, for the 2nd fraction, since 27 × 14 = 378,
12/27 = 12 × 14/27 × 14 = 168/378 - Add the two like fractions:
135/378 + 168/378 = 135 + 168/378 = 303/378 - 303/378 simplified gives 101/126
- So, 15/42 + 12/27 = 101/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/42+12/27 15/42+24/27 15/84+12/27 15/42+12/54 45/42+12/27 15/42+36/27 15/42+12/81 75/42+12/27 15/42+60/27 15/42+84/27