Add 4/40 and 45/54
4/40 + 45/54 is 14/15.
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,
4/40 = 4 × 27/40 × 27 = 108/1080 - Likewise, for the 2nd fraction, since 54 × 20 = 1080,
45/54 = 45 × 20/54 × 20 = 900/1080 - Add the two like fractions:
108/1080 + 900/1080 = 108 + 900/1080 = 1008/1080 - 1008/1080 simplified gives 14/15
- So, 4/40 + 45/54 = 14/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/40+45/54 4/40+90/54 4/80+45/54 12/40+45/54 20/40+45/54 28/40+45/54