Add 2/54 and 15/21
2/54 + 15/21 is 142/189.
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,
2/54 = 2 × 7/54 × 7 = 14/378 - Likewise, for the 2nd fraction, since 21 × 18 = 378,
15/21 = 15 × 18/21 × 18 = 270/378 - Add the two like fractions:
14/378 + 270/378 = 14 + 270/378 = 284/378 - 284/378 simplified gives 142/189
- So, 2/54 + 15/21 = 142/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/54+15/21 2/54+30/21 2/54+15/42 6/54+15/21 2/54+45/21 2/54+15/63 10/54+15/21 2/54+75/21 14/54+15/21