Add 18/40 and 45/8
1st number: 18/40, 2nd number: 5 5/8
18/40 + 45/8 is 243/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
18/40 = 18 × 1/40 × 1 = 18/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
45/8 = 45 × 5/8 × 5 = 225/40 - Add the two like fractions:
18/40 + 225/40 = 18 + 225/40 = 243/40 - So, 18/40 + 45/8 = 243/40
In mixed form: 63/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/40+45/8 18/40+90/8 18/80+45/8 18/40+45/16 54/40+45/8 18/40+45/24 90/40+45/8 18/40+45/40 18/40+45/56