Subtract 63/80 from 45/63
45/63 - 63/80 is -41/560.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 80 is 5040
Next, find the equivalent fraction of both fractional numbers with denominator 5040 - For the 1st fraction, since 63 × 80 = 5040,
45/63 = 45 × 80/63 × 80 = 3600/5040 - Likewise, for the 2nd fraction, since 80 × 63 = 5040,
63/80 = 63 × 63/80 × 63 = 3969/5040 - Subtract the two like fractions:
3600/5040 - 3969/5040 = 3600 - 3969/5040 = -369/5040 - After reducing the fraction, the answer is -41/560
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/63-63/80