Subtract 45/21 from 56/4
1st number: 14 0/4, 2nd number: 2 3/21
56/4 - 45/21 is 83/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
56/4 = 56 × 21/4 × 21 = 1176/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
45/21 = 45 × 4/21 × 4 = 180/84 - Subtract the two like fractions:
1176/84 - 180/84 = 1176 - 180/84 = 996/84 - After reducing the fraction, the answer is 83/7
- In mixed form: 116/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/4-90/21 56/8-45/21 56/4-45/42 56/12-45/21 56/4-45/63 56/20-45/21 56/28-45/21