Add 2/21 and 36/54
2/21 + 36/54 is 16/21.
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,
2/21 = 2 × 18/21 × 18 = 36/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
36/54 = 36 × 7/54 × 7 = 252/378 - Add the two like fractions:
36/378 + 252/378 = 36 + 252/378 = 288/378 - 288/378 simplified gives 16/21
- So, 2/21 + 36/54 = 16/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/21+36/54 2/21+72/54 2/42+36/54 6/21+36/54 2/63+36/54 10/21+36/54 14/21+36/54