Subtract 56/48 from 9/42
1st number: 9/42, 2nd number: 1 8/48
9/42 - 56/48 is -20/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 48 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 42 × 8 = 336,
9/42 = 9 × 8/42 × 8 = 72/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
56/48 = 56 × 7/48 × 7 = 392/336 - Subtract the two like fractions:
72/336 - 392/336 = 72 - 392/336 = -320/336 - After reducing the fraction, the answer is -20/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/42-56/48 9/84-56/48 9/42-56/96 27/42-56/48 45/42-56/48 63/42-56/48