Subtract 10/8 from 8/40
1st number: 8/40, 2nd number: 1 2/8
8/40 - 10/8 is -21/20.
Steps for subtracting 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,
8/40 = 8 × 1/40 × 1 = 8/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
10/8 = 10 × 5/8 × 5 = 50/40 - Subtract the two like fractions:
8/40 - 50/40 = 8 - 50/40 = -42/40 - After reducing the fraction, the answer is -21/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/40-10/8 8/40-20/8 8/80-10/8 8/40-10/16 24/40-10/8 8/40-30/8 8/40-10/24 8/40-50/8 8/40-10/40 56/40-10/8 8/40-70/8 8/40-10/56