Add 5/21 and 6/54
5/21 + 6/54 is 22/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 21 × 18 = 378,
5/21 = 5 × 18/21 × 18 = 90/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
6/54 = 6 × 7/54 × 7 = 42/378 - Add the two like fractions:
90/378 + 42/378 = 90 + 42/378 = 132/378 - 132/378 simplified gives 22/63
- So, 5/21 + 6/54 = 22/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/21+6/54 5/21+12/54 5/42+6/54 15/21+6/54 5/21+18/54 5/63+6/54 25/21+6/54 5/21+30/54 35/21+6/54 5/21+42/54