Subtract 21/63 from 7/48
7/48 - 21/63 is -3/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 63 is 1008
Next, find the equivalent fraction of both fractional numbers with denominator 1008 - For the 1st fraction, since 48 × 21 = 1008,
7/48 = 7 × 21/48 × 21 = 147/1008 - Likewise, for the 2nd fraction, since 63 × 16 = 1008,
21/63 = 21 × 16/63 × 16 = 336/1008 - Subtract the two like fractions:
147/1008 - 336/1008 = 147 - 336/1008 = -189/1008 - After reducing the fraction, the answer is -3/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/48-21/63 7/48-42/63 7/96-21/63 21/48-21/63 35/48-21/63 49/48-21/63