Add 5/30 and 21/54
5/30 + 21/54 is 5/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 30 × 9 = 270,
5/30 = 5 × 9/30 × 9 = 45/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
21/54 = 21 × 5/54 × 5 = 105/270 - Add the two like fractions:
45/270 + 105/270 = 45 + 105/270 = 150/270 - 150/270 simplified gives 5/9
- So, 5/30 + 21/54 = 5/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/30+21/54 5/30+42/54 5/60+21/54 15/30+21/54 5/30+63/54 5/90+21/54 25/30+21/54 35/30+21/54