Subtract 20/12 from 56/35
1st number: 1 21/35, 2nd number: 1 8/12
56/35 - 20/12 is -1/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 12 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 35 × 12 = 420,
56/35 = 56 × 12/35 × 12 = 672/420 - Likewise, for the 2nd fraction, since 12 × 35 = 420,
20/12 = 20 × 35/12 × 35 = 700/420 - Subtract the two like fractions:
672/420 - 700/420 = 672 - 700/420 = -28/420 - After reducing the fraction, the answer is -1/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/35-40/12 56/70-20/12 56/35-20/24 56/35-60/12 56/35-20/36 56/35-20/60 56/35-20/84