Add 5/54 and 2/21
5/54 + 2/21 is 71/378.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 21 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
5/54 = 5 × 7/54 × 7 = 35/378 - Likewise, for the 2nd fraction, since 21 × 18 = 378,
2/21 = 2 × 18/21 × 18 = 36/378 - Add the two like fractions:
35/378 + 36/378 = 35 + 36/378 = 71/378 - So, 5/54 + 2/21 = 71/378
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/54+2/21 5/54+4/21 5/54+2/42 15/54+2/21 5/54+6/21 5/54+2/63 25/54+2/21 5/54+10/21 35/54+2/21 5/54+14/21