Add 28/42 and 9/54
28/42 + 9/54 is 5/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 42 × 9 = 378,
28/42 = 28 × 9/42 × 9 = 252/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
9/54 = 9 × 7/54 × 7 = 63/378 - Add the two like fractions:
252/378 + 63/378 = 252 + 63/378 = 315/378 - 315/378 simplified gives 5/6
- So, 28/42 + 9/54 = 5/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/42+9/54 28/42+18/54 28/84+9/54 84/42+9/54 28/42+27/54 28/42+45/54 28/42+63/54