Add 30/54 and 81/7
1st number: 30/54, 2nd number: 11 4/7
30/54 + 81/7 is 764/63.
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,
30/54 = 30 × 7/54 × 7 = 210/378 - Likewise, for the 2nd fraction, since 7 × 54 = 378,
81/7 = 81 × 54/7 × 54 = 4374/378 - Add the two like fractions:
210/378 + 4374/378 = 210 + 4374/378 = 4584/378 - 4584/378 simplified gives 764/63
- So, 30/54 + 81/7 = 764/63
In mixed form: 128/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/54+81/7 30/54+81/14 90/54+81/7 30/54+81/21 30/54+81/35 30/54+81/49