Subtract 10/8 from 8/20
1st number: 8/20, 2nd number: 1 2/8
8/20 - 10/8 is -17/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
8/20 = 8 × 2/20 × 2 = 16/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
10/8 = 10 × 5/8 × 5 = 50/40 - Subtract the two like fractions:
16/40 - 50/40 = 16 - 50/40 = -34/40 - After reducing the fraction, the answer is -17/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/20-10/8 8/20-20/8 8/40-10/8 8/20-10/16 24/20-10/8 8/20-30/8 8/60-10/8 8/20-10/24 40/20-10/8 8/20-50/8 8/20-10/40 56/20-10/8 8/20-70/8 8/20-10/56