Subtract 48/42 from 15/56
1st number: 15/56, 2nd number: 1 6/42
15/56 - 48/42 is -7/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 42 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
15/56 = 15 × 3/56 × 3 = 45/168 - Likewise, for the 2nd fraction, since 42 × 4 = 168,
48/42 = 48 × 4/42 × 4 = 192/168 - Subtract the two like fractions:
45/168 - 192/168 = 45 - 192/168 = -147/168 - After reducing the fraction, the answer is -7/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/56-48/42 15/56-96/42 15/56-48/84 45/56-48/42 75/56-48/42