Add 54/30 and 21/18
1st number: 1 24/30, 2nd number: 1 3/18
54/30 + 21/18 is 89/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
54/30 = 54 × 3/30 × 3 = 162/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
21/18 = 21 × 5/18 × 5 = 105/90 - Add the two like fractions:
162/90 + 105/90 = 162 + 105/90 = 267/90 - 267/90 simplified gives 89/30
- So, 54/30 + 21/18 = 89/30
In mixed form: 229/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/30+42/18 54/60+21/18 54/30+21/36 54/30+63/18 54/90+21/18 54/30+21/54 54/30+21/90