Subtract 40/8 from 7/5
1st number: 1 2/5, 2nd number: 5 0/8
7/5 - 40/8 is -18/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 5 × 8 = 40,
7/5 = 7 × 8/5 × 8 = 56/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
40/8 = 40 × 5/8 × 5 = 200/40 - Subtract the two like fractions:
56/40 - 200/40 = 56 - 200/40 = -144/40 - After reducing the fraction, the answer is -18/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/5-40/8 7/5-80/8 7/10-40/8 7/5-40/16 21/5-40/8 7/15-40/8 7/5-40/24 35/5-40/8 7/25-40/8 49/5-40/8 7/35-40/8 7/5-40/56