Subtract 24/4 from 7/21
1st number: 7/21, 2nd number: 6 0/4
7/21 - 24/4 is -17/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
7/21 = 7 × 4/21 × 4 = 28/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
24/4 = 24 × 21/4 × 21 = 504/84 - Subtract the two like fractions:
28/84 - 504/84 = 28 - 504/84 = -476/84 - After reducing the fraction, the answer is -17/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/21-24/4 7/21-48/4 7/42-24/4 7/21-24/8 7/21-72/4 7/63-24/4 7/21-24/12 35/21-24/4 7/21-24/20 49/21-24/4 7/21-24/28