Add 3/54 and 42/7
1st number: 3/54, 2nd number: 6 0/7
3/54 + 42/7 is 109/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 7 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
3/54 = 3 × 7/54 × 7 = 21/378 - Likewise, for the 2nd fraction, since 7 × 54 = 378,
42/7 = 42 × 54/7 × 54 = 2268/378 - Add the two like fractions:
21/378 + 2268/378 = 21 + 2268/378 = 2289/378 - 2289/378 simplified gives 109/18
- So, 3/54 + 42/7 = 109/18
In mixed form: 61/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/54+42/7 3/54+84/7 3/54+42/14 9/54+42/7 3/54+42/21 15/54+42/7 3/54+42/35 21/54+42/7 3/54+42/49