Subtract 20/4 from 12/9
1st number: 1 3/9, 2nd number: 5 0/4
12/9 - 20/4 is -11/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 4 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 9 × 4 = 36,
12/9 = 12 × 4/9 × 4 = 48/36 - Likewise, for the 2nd fraction, since 4 × 9 = 36,
20/4 = 20 × 9/4 × 9 = 180/36 - Subtract the two like fractions:
48/36 - 180/36 = 48 - 180/36 = -132/36 - After reducing the fraction, the answer is -11/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/9-20/4 12/9-40/4 12/18-20/4 12/9-20/8 36/9-20/4 12/9-60/4 12/27-20/4 12/9-20/12 60/9-20/4 12/45-20/4 84/9-20/4 12/63-20/4 12/9-20/28