Subtract 75/24 from 21/56
1st number: 21/56, 2nd number: 3 3/24
21/56 - 75/24 is -11/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
21/56 = 21 × 3/56 × 3 = 63/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
75/24 = 75 × 7/24 × 7 = 525/168 - Subtract the two like fractions:
63/168 - 525/168 = 63 - 525/168 = -462/168 - After reducing the fraction, the answer is -11/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/56-75/24 21/56-75/48 63/56-75/24 21/56-75/72