Subtract 96/84 from 21/56
1st number: 21/56, 2nd number: 1 12/84
21/56 - 96/84 is -43/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 84 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
21/56 = 21 × 3/56 × 3 = 63/168 - Likewise, for the 2nd fraction, since 84 × 2 = 168,
96/84 = 96 × 2/84 × 2 = 192/168 - Subtract the two like fractions:
63/168 - 192/168 = 63 - 192/168 = -129/168 - After reducing the fraction, the answer is -43/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/56-96/84 63/56-96/84