Subtract 21/56 from 90/4
1st number: 22 2/4, 2nd number: 21/56
90/4 - 21/56 is 177/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 56 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 4 × 14 = 56,
90/4 = 90 × 14/4 × 14 = 1260/56 - Likewise, for the 2nd fraction, since 56 × 1 = 56,
21/56 = 21 × 1/56 × 1 = 21/56 - Subtract the two like fractions:
1260/56 - 21/56 = 1260 - 21/56 = 1239/56 - After reducing the fraction, the answer is 177/8
- In mixed form: 221/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/4-42/56 90/8-21/56 90/4-63/56 90/12-21/56 90/20-21/56 90/28-21/56