Subtract 56/24 from 72/84
1st number: 72/84, 2nd number: 2 8/24
72/84 - 56/24 is -31/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 84 × 2 = 168,
72/84 = 72 × 2/84 × 2 = 144/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
56/24 = 56 × 7/24 × 7 = 392/168 - Subtract the two like fractions:
144/168 - 392/168 = 144 - 392/168 = -248/168 - After reducing the fraction, the answer is -31/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/84-56/48 72/84-56/72