Subtract 1/56 from 42/40
1st number: 1 2/40, 2nd number: 1/56
42/40 - 1/56 is 289/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
42/40 = 42 × 7/40 × 7 = 294/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
1/56 = 1 × 5/56 × 5 = 5/280 - Subtract the two like fractions:
294/280 - 5/280 = 294 - 5/280 = 289/280 - In mixed form: 19/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/40-1/56 42/40-2/56 42/80-1/56 42/40-3/56 42/40-5/56 42/40-7/56