Subtract 9/63 from 7/20
7/20 - 9/63 is 29/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 63 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 20 × 63 = 1260,
7/20 = 7 × 63/20 × 63 = 441/1260 - Likewise, for the 2nd fraction, since 63 × 20 = 1260,
9/63 = 9 × 20/63 × 20 = 180/1260 - Subtract the two like fractions:
441/1260 - 180/1260 = 441 - 180/1260 = 261/1260 - After reducing the fraction, the answer is 29/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/20-9/63 7/20-18/63 7/40-9/63 21/20-9/63 7/20-27/63 7/60-9/63 35/20-9/63 7/20-45/63 49/20-9/63