Subtract 9/40 from 63/8
1st number: 7 7/8, 2nd number: 9/40
63/8 - 9/40 is 153/20.
Steps for subtracting 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,
63/8 = 63 × 5/8 × 5 = 315/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
9/40 = 9 × 1/40 × 1 = 9/40 - Subtract the two like fractions:
315/40 - 9/40 = 315 - 9/40 = 306/40 - After reducing the fraction, the answer is 153/20
- In mixed form: 713/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/8-18/40 63/16-9/40 63/8-9/80 63/8-27/40 63/24-9/40 63/8-45/40 63/40-9/40 63/8-63/40 63/56-9/40