Add 54/8 and 9/40
1st number: 6 6/8, 2nd number: 9/40
54/8 + 9/40 is 279/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 8 × 5 = 40,
54/8 = 54 × 5/8 × 5 = 270/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
9/40 = 9 × 1/40 × 1 = 9/40 - Add the two like fractions:
270/40 + 9/40 = 270 + 9/40 = 279/40 - So, 54/8 + 9/40 = 279/40
In mixed form: 639/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/8+18/40 54/16+9/40 54/8+9/80 54/8+27/40 54/24+9/40 54/8+45/40 54/40+9/40 54/8+63/40 54/56+9/40