Subtract 40/63 from 5/12
5/12 - 40/63 is -55/252.
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,
5/12 = 5 × 21/12 × 21 = 105/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
40/63 = 40 × 4/63 × 4 = 160/252 - Subtract the two like fractions:
105/252 - 160/252 = 105 - 160/252 = -55/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/12-40/63 5/12-80/63 5/24-40/63 15/12-40/63 5/36-40/63 25/12-40/63 5/60-40/63 35/12-40/63 5/84-40/63