Add 15/42 and 84/27
1st number: 15/42, 2nd number: 3 3/27
15/42 + 84/27 is 437/126.
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,
84/27 = 84 × 14/27 × 14 = 1176/378 - Add the two like fractions:
135/378 + 1176/378 = 135 + 1176/378 = 1311/378 - 1311/378 simplified gives 437/126
- So, 15/42 + 84/27 = 437/126
In mixed form: 359/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/42+84/27 15/84+84/27 15/42+84/54 45/42+84/27 15/42+84/81 75/42+84/27