Add 25/54 and 2/21
25/54 + 2/21 is 211/378.
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,
25/54 = 25 × 7/54 × 7 = 175/378 - Likewise, for the 2nd fraction, since 21 × 18 = 378,
2/21 = 2 × 18/21 × 18 = 36/378 - Add the two like fractions:
175/378 + 36/378 = 175 + 36/378 = 211/378 - So, 25/54 + 2/21 = 211/378
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/54+2/21 25/54+4/21 25/54+2/42 75/54+2/21 25/54+6/21 25/54+2/63 25/54+10/21 25/54+14/21