Subtract 21/4 from 72/24
1st number: 3 0/24, 2nd number: 5 1/4
72/24 - 21/4 is -9/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 4 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 24 × 1 = 24,
72/24 = 72 × 1/24 × 1 = 72/24 - Likewise, for the 2nd fraction, since 4 × 6 = 24,
21/4 = 21 × 6/4 × 6 = 126/24 - Subtract the two like fractions:
72/24 - 126/24 = 72 - 126/24 = -54/24 - After reducing the fraction, the answer is -9/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/24-42/4 72/48-21/4 72/24-21/8 72/24-63/4 72/24-21/12 72/24-21/20 72/24-21/28