Subtract 3/56 from 42/20
1st number: 2 2/20, 2nd number: 3/56
42/20 - 3/56 is 573/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 20 × 14 = 280,
42/20 = 42 × 14/20 × 14 = 588/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
3/56 = 3 × 5/56 × 5 = 15/280 - Subtract the two like fractions:
588/280 - 15/280 = 588 - 15/280 = 573/280 - In mixed form: 213/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/20-3/56 42/20-6/56 42/40-3/56 42/20-9/56 42/60-3/56 42/20-15/56 42/20-21/56