Add 45/54 and 20/18
1st number: 45/54, 2nd number: 1 2/18
45/54 + 20/18 is 35/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 18 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 54 × 1 = 54,
45/54 = 45 × 1/54 × 1 = 45/54 - Likewise, for the 2nd fraction, since 18 × 3 = 54,
20/18 = 20 × 3/18 × 3 = 60/54 - Add the two like fractions:
45/54 + 60/54 = 45 + 60/54 = 105/54 - 105/54 simplified gives 35/18
- So, 45/54 + 20/18 = 35/18
In mixed form: 117/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/54+20/18 45/54+40/18 45/54+20/36 45/54+60/18 45/54+20/54 45/54+20/90