Subtract 90/20 from 3/63
1st number: 3/63, 2nd number: 4 10/20
3/63 - 90/20 is -187/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 20 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 63 × 20 = 1260,
3/63 = 3 × 20/63 × 20 = 60/1260 - Likewise, for the 2nd fraction, since 20 × 63 = 1260,
90/20 = 90 × 63/20 × 63 = 5670/1260 - Subtract the two like fractions:
60/1260 - 5670/1260 = 60 - 5670/1260 = -5610/1260 - After reducing the fraction, the answer is -187/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/63-90/20 3/63-90/40 9/63-90/20 3/63-90/60 15/63-90/20 21/63-90/20