Add 30/42 and 48/54
30/42 + 48/54 is 101/63.
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,
30/42 = 30 × 9/42 × 9 = 270/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
48/54 = 48 × 7/54 × 7 = 336/378 - Add the two like fractions:
270/378 + 336/378 = 270 + 336/378 = 606/378 - 606/378 simplified gives 101/63
- So, 30/42 + 48/54 = 101/63
In mixed form: 138/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/42+48/54 30/42+96/54 30/84+48/54 90/42+48/54