Subtract 56/36 from 12/20
1st number: 12/20, 2nd number: 1 20/36
12/20 - 56/36 is -43/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
12/20 = 12 × 9/20 × 9 = 108/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
56/36 = 56 × 5/36 × 5 = 280/180 - Subtract the two like fractions:
108/180 - 280/180 = 108 - 280/180 = -172/180 - After reducing the fraction, the answer is -43/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/20-56/36 12/40-56/36 12/20-56/72 36/20-56/36 12/60-56/36 60/20-56/36 84/20-56/36