Add 4/21 and 5/54
4/21 + 5/54 is 107/378.
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,
4/21 = 4 × 18/21 × 18 = 72/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
5/54 = 5 × 7/54 × 7 = 35/378 - Add the two like fractions:
72/378 + 35/378 = 72 + 35/378 = 107/378 - So, 4/21 + 5/54 = 107/378
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/21+5/54 4/21+10/54 4/42+5/54 12/21+5/54 4/21+15/54 4/63+5/54 20/21+5/54 4/21+25/54 28/21+5/54 4/21+35/54