Add 5/45 and 21/54
5/45 + 21/54 is 1/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 45 × 6 = 270,
5/45 = 5 × 6/45 × 6 = 30/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
21/54 = 21 × 5/54 × 5 = 105/270 - Add the two like fractions:
30/270 + 105/270 = 30 + 105/270 = 135/270 - 135/270 simplified gives 1/2
- So, 5/45 + 21/54 = 1/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/45+21/54 5/45+42/54 5/90+21/54 15/45+21/54 5/45+63/54 25/45+21/54 35/45+21/54