Subtract 9/28 from 8/63
8/63 - 9/28 is -7/36.
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,
8/63 = 8 × 4/63 × 4 = 32/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
9/28 = 9 × 9/28 × 9 = 81/252 - Subtract the two like fractions:
32/252 - 81/252 = 32 - 81/252 = -49/252 - After reducing the fraction, the answer is -7/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/63-9/28 8/63-18/28 8/63-9/56 24/63-9/28 8/63-27/28 8/63-9/84 40/63-9/28 8/63-45/28 56/63-9/28 8/63-63/28