Add 45/2 and 21/18
1st number: 22 1/2, 2nd number: 1 3/18
45/2 + 21/18 is 71/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 18 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 2 × 9 = 18,
45/2 = 45 × 9/2 × 9 = 405/18 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
21/18 = 21 × 1/18 × 1 = 21/18 - Add the two like fractions:
405/18 + 21/18 = 405 + 21/18 = 426/18 - 426/18 simplified gives 71/3
- So, 45/2 + 21/18 = 71/3
In mixed form: 232/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/2+21/18 45/2+42/18 45/4+21/18 45/2+21/36 45/2+63/18 45/6+21/18 45/2+21/54 45/10+21/18 45/2+21/90 45/14+21/18