Subtract 54/21 from 3/24
1st number: 3/24, 2nd number: 2 12/21
3/24 - 54/21 is -137/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
3/24 = 3 × 7/24 × 7 = 21/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
54/21 = 54 × 8/21 × 8 = 432/168 - Subtract the two like fractions:
21/168 - 432/168 = 21 - 432/168 = -411/168 - After reducing the fraction, the answer is -137/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/24-54/21 3/48-54/21 3/24-54/42 9/24-54/21 3/72-54/21 3/24-54/63 15/24-54/21 21/24-54/21