Subtract 28/63 from 9/12
9/12 - 28/63 is 11/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 12 × 21 = 252,
9/12 = 9 × 21/12 × 21 = 189/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
28/63 = 28 × 4/63 × 4 = 112/252 - Subtract the two like fractions:
189/252 - 112/252 = 189 - 112/252 = 77/252 - After reducing the fraction, the answer is 11/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/12-28/63 9/12-56/63 9/24-28/63 27/12-28/63 9/12-84/63 9/36-28/63 45/12-28/63 9/60-28/63 63/12-28/63 9/84-28/63