Subtract 20/63 from 4/16
4/16 - 20/63 is -17/252.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 63 is 1008
Next, find the equivalent fraction of both fractional numbers with denominator 1008 - For the 1st fraction, since 16 × 63 = 1008,
4/16 = 4 × 63/16 × 63 = 252/1008 - Likewise, for the 2nd fraction, since 63 × 16 = 1008,
20/63 = 20 × 16/63 × 16 = 320/1008 - Subtract the two like fractions:
252/1008 - 320/1008 = 252 - 320/1008 = -68/1008 - After reducing the fraction, the answer is -17/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/16-20/63 4/16-40/63 4/32-20/63 12/16-20/63 4/16-60/63 4/48-20/63 20/16-20/63 4/80-20/63 28/16-20/63