Subtract 25/8 from 42/56
1st number: 42/56, 2nd number: 3 1/8
42/56 - 25/8 is -19/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 56 × 1 = 56,
42/56 = 42 × 1/56 × 1 = 42/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
25/8 = 25 × 7/8 × 7 = 175/56 - Subtract the two like fractions:
42/56 - 175/56 = 42 - 175/56 = -133/56 - After reducing the fraction, the answer is -19/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/56-25/8 42/56-50/8 42/56-25/16 42/56-75/8 42/56-25/24 42/56-25/40 42/56-25/56