Subtract 75/21 from 5/8
1st number: 5/8, 2nd number: 3 12/21
5/8 - 75/21 is -165/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
5/8 = 5 × 21/8 × 21 = 105/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
75/21 = 75 × 8/21 × 8 = 600/168 - Subtract the two like fractions:
105/168 - 600/168 = 105 - 600/168 = -495/168 - After reducing the fraction, the answer is -165/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/8-75/21 5/16-75/21 5/8-75/42 15/8-75/21 5/24-75/21 5/8-75/63 25/8-75/21 5/40-75/21 35/8-75/21 5/56-75/21