Subtract 45/63 from 5/20
5/20 - 45/63 is -13/28.
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,
5/20 = 5 × 63/20 × 63 = 315/1260 - Likewise, for the 2nd fraction, since 63 × 20 = 1260,
45/63 = 45 × 20/63 × 20 = 900/1260 - Subtract the two like fractions:
315/1260 - 900/1260 = 315 - 900/1260 = -585/1260 - After reducing the fraction, the answer is -13/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/20-45/63 5/20-90/63 5/40-45/63 15/20-45/63 5/60-45/63 25/20-45/63 35/20-45/63