Subtract 9/28 from 12/9
1st number: 1 3/9, 2nd number: 9/28
12/9 - 9/28 is 85/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 28 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 9 × 28 = 252,
12/9 = 12 × 28/9 × 28 = 336/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
9/28 = 9 × 9/28 × 9 = 81/252 - Subtract the two like fractions:
336/252 - 81/252 = 336 - 81/252 = 255/252 - After reducing the fraction, the answer is 85/84
- In mixed form: 11/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/9-9/28 12/9-18/28 12/18-9/28 12/9-9/56 36/9-9/28 12/9-27/28 12/27-9/28 12/9-9/84 60/9-9/28 12/9-45/28 12/45-9/28 84/9-9/28 12/9-63/28 12/63-9/28