Subtract 9/21 from 56/8
1st number: 7 0/8, 2nd number: 9/21
56/8 - 9/21 is 46/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
56/8 = 56 × 21/8 × 21 = 1176/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
9/21 = 9 × 8/21 × 8 = 72/168 - Subtract the two like fractions:
1176/168 - 72/168 = 1176 - 72/168 = 1104/168 - After reducing the fraction, the answer is 46/7
- In mixed form: 64/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/8-18/21 56/16-9/21 56/8-9/42 56/8-27/21 56/24-9/21 56/8-9/63 56/8-45/21 56/40-9/21 56/8-63/21