Subtract 21/56 from 84/7
1st number: 12 0/7, 2nd number: 21/56
84/7 - 21/56 is 93/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 56 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 7 × 8 = 56,
84/7 = 84 × 8/7 × 8 = 672/56 - Likewise, for the 2nd fraction, since 56 × 1 = 56,
21/56 = 21 × 1/56 × 1 = 21/56 - Subtract the two like fractions:
672/56 - 21/56 = 672 - 21/56 = 651/56 - After reducing the fraction, the answer is 93/8
- In mixed form: 115/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/7-42/56 84/14-21/56 84/7-63/56 84/21-21/56 84/35-21/56 84/49-21/56