Add 42/28 and 28/81
1st number: 1 14/28, 2nd number: 28/81
42/28 + 28/81 is 299/162.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 81 is 2268
Next, find the equivalent fraction of both fractional numbers with denominator 2268 - For the 1st fraction, since 28 × 81 = 2268,
42/28 = 42 × 81/28 × 81 = 3402/2268 - Likewise, for the 2nd fraction, since 81 × 28 = 2268,
28/81 = 28 × 28/81 × 28 = 784/2268 - Add the two like fractions:
3402/2268 + 784/2268 = 3402 + 784/2268 = 4186/2268 - 4186/2268 simplified gives 299/162
- So, 42/28 + 28/81 = 299/162
In mixed form: 1137/162
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/28+28/81 42/28+56/81 42/56+28/81 42/28+84/81 42/84+28/81