Add 28/54 and 49/42
1st number: 28/54, 2nd number: 1 7/42
28/54 + 49/42 is 91/54.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 42 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
28/54 = 28 × 7/54 × 7 = 196/378 - Likewise, for the 2nd fraction, since 42 × 9 = 378,
49/42 = 49 × 9/42 × 9 = 441/378 - Add the two like fractions:
196/378 + 441/378 = 196 + 441/378 = 637/378 - 637/378 simplified gives 91/54
- So, 28/54 + 49/42 = 91/54
In mixed form: 137/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/54+49/42 28/54+98/42 28/54+49/84 84/54+49/42