Add 18/40 and 28/54
18/40 + 28/54 is 523/540.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 54 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 40 × 27 = 1080,
18/40 = 18 × 27/40 × 27 = 486/1080 - Likewise, for the 2nd fraction, since 54 × 20 = 1080,
28/54 = 28 × 20/54 × 20 = 560/1080 - Add the two like fractions:
486/1080 + 560/1080 = 486 + 560/1080 = 1046/1080 - 1046/1080 simplified gives 523/540
- So, 18/40 + 28/54 = 523/540
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/40+28/54 18/40+56/54 18/80+28/54 54/40+28/54 18/40+84/54 90/40+28/54