Subtract 30/21 from 4/24
1st number: 4/24, 2nd number: 1 9/21
4/24 - 30/21 is -53/42.
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,
4/24 = 4 × 7/24 × 7 = 28/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
30/21 = 30 × 8/21 × 8 = 240/168 - Subtract the two like fractions:
28/168 - 240/168 = 28 - 240/168 = -212/168 - After reducing the fraction, the answer is -53/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/24-30/21 4/24-60/21 4/48-30/21 4/24-30/42 12/24-30/21 4/24-90/21 4/72-30/21 4/24-30/63 20/24-30/21 28/24-30/21