Subtract 12/9 from 36/28
1st number: 1 8/28, 2nd number: 1 3/9
36/28 - 12/9 is -1/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 9 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
36/28 = 36 × 9/28 × 9 = 324/252 - Likewise, for the 2nd fraction, since 9 × 28 = 252,
12/9 = 12 × 28/9 × 28 = 336/252 - Subtract the two like fractions:
324/252 - 336/252 = 324 - 336/252 = -12/252 - After reducing the fraction, the answer is -1/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/28-12/9 36/28-24/9 36/56-12/9 36/28-12/18 36/28-36/9 36/84-12/9 36/28-12/27 36/28-60/9 36/28-12/45 36/28-84/9 36/28-12/63