Subtract 45/60 from 20/63
20/63 - 45/60 is -109/252.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 60 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 63 × 20 = 1260,
20/63 = 20 × 20/63 × 20 = 400/1260 - Likewise, for the 2nd fraction, since 60 × 21 = 1260,
45/60 = 45 × 21/60 × 21 = 945/1260 - Subtract the two like fractions:
400/1260 - 945/1260 = 400 - 945/1260 = -545/1260 - After reducing the fraction, the answer is -109/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/63-45/60 20/63-90/60 60/63-45/60