Subtract 12/28 from 9/63
9/63 - 12/28 is -2/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 28 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 63 × 4 = 252,
9/63 = 9 × 4/63 × 4 = 36/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
12/28 = 12 × 9/28 × 9 = 108/252 - Subtract the two like fractions:
36/252 - 108/252 = 36 - 108/252 = -72/252 - After reducing the fraction, the answer is -2/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/63-12/28 9/63-24/28 9/63-12/56 27/63-12/28 9/63-36/28 9/63-12/84 45/63-12/28 9/63-60/28 9/63-84/28