Add 30/42 and 28/27
1st number: 30/42, 2nd number: 1 1/27
30/42 + 28/27 is 331/189.
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,
30/42 = 30 × 9/42 × 9 = 270/378 - Likewise, for the 2nd fraction, since 27 × 14 = 378,
28/27 = 28 × 14/27 × 14 = 392/378 - Add the two like fractions:
270/378 + 392/378 = 270 + 392/378 = 662/378 - 662/378 simplified gives 331/189
- So, 30/42 + 28/27 = 331/189
In mixed form: 1142/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/42+28/27 30/42+56/27 30/84+28/27 30/42+28/54 90/42+28/27 30/42+84/27 30/42+28/81