Subtract 12/9 from 36/20
1st number: 1 16/20, 2nd number: 1 3/9
36/20 - 12/9 is 7/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 9 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
36/20 = 36 × 9/20 × 9 = 324/180 - Likewise, for the 2nd fraction, since 9 × 20 = 180,
12/9 = 12 × 20/9 × 20 = 240/180 - Subtract the two like fractions:
324/180 - 240/180 = 324 - 240/180 = 84/180 - After reducing the fraction, the answer is 7/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/20-12/9 36/20-24/9 36/40-12/9 36/20-12/18 36/20-36/9 36/60-12/9 36/20-12/27 36/20-60/9 36/20-12/45 36/20-84/9 36/20-12/63