Subtract 8/5 from 9/40
1st number: 9/40, 2nd number: 1 3/5
9/40 - 8/5 is -11/8.
Steps for subtracting 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,
9/40 = 9 × 1/40 × 1 = 9/40 - Likewise, for the 2nd fraction, since 5 × 8 = 40,
8/5 = 8 × 8/5 × 8 = 64/40 - Subtract the two like fractions:
9/40 - 64/40 = 9 - 64/40 = -55/40 - After reducing the fraction, the answer is -11/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/40-8/5 9/40-16/5 9/80-8/5 9/40-8/10 27/40-8/5 9/40-24/5 9/40-8/15 45/40-8/5 9/40-40/5 9/40-8/25 63/40-8/5 9/40-56/5 9/40-8/35