Subtract 10/8 from 81/4
1st number: 20 1/4, 2nd number: 1 2/8
81/4 - 10/8 is 19/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 8 is 8
Next, find the equivalent fraction of both fractional numbers with denominator 8 - For the 1st fraction, since 4 × 2 = 8,
81/4 = 81 × 2/4 × 2 = 162/8 - Likewise, for the 2nd fraction, since 8 × 1 = 8,
10/8 = 10 × 1/8 × 1 = 10/8 - Subtract the two like fractions:
162/8 - 10/8 = 162 - 10/8 = 152/8 - After reducing the fraction, the answer is 19/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/4-20/8 81/8-10/8 81/4-10/16 81/4-30/8 81/12-10/8 81/4-10/24 81/4-50/8 81/20-10/8 81/4-10/40 81/4-70/8 81/28-10/8 81/4-10/56