Add 1/15 and 21/54
1/15 + 21/54 is 41/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 15 × 18 = 270,
1/15 = 1 × 18/15 × 18 = 18/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
21/54 = 21 × 5/54 × 5 = 105/270 - Add the two like fractions:
18/270 + 105/270 = 18 + 105/270 = 123/270 - 123/270 simplified gives 41/90
- So, 1/15 + 21/54 = 41/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/15+21/54 1/15+42/54 1/30+21/54 3/15+21/54 1/15+63/54 1/45+21/54 5/15+21/54 1/75+21/54 7/15+21/54