Subtract 20/63 from 7/12
7/12 - 20/63 is 67/252.
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,
7/12 = 7 × 21/12 × 21 = 147/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
20/63 = 20 × 4/63 × 4 = 80/252 - Subtract the two like fractions:
147/252 - 80/252 = 147 - 80/252 = 67/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/12-20/63 7/12-40/63 7/24-20/63 21/12-20/63 7/12-60/63 7/36-20/63 35/12-20/63 7/60-20/63 49/12-20/63 7/84-20/63