Add 54/40 and 18/5
1st number: 1 14/40, 2nd number: 3 3/5
54/40 + 18/5 is 99/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 5 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
54/40 = 54 × 1/40 × 1 = 54/40 - Likewise, for the 2nd fraction, since 5 × 8 = 40,
18/5 = 18 × 8/5 × 8 = 144/40 - Add the two like fractions:
54/40 + 144/40 = 54 + 144/40 = 198/40 - 198/40 simplified gives 99/20
- So, 54/40 + 18/5 = 99/20
In mixed form: 419/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/40+36/5 54/80+18/5 54/40+18/10 54/40+54/5 54/40+18/15 54/40+90/5 54/40+18/25 54/40+18/35