Subtract 25/16 from 21/63
1st number: 21/63, 2nd number: 1 9/16
21/63 - 25/16 is -59/48.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 16 is 1008
Next, find the equivalent fraction of both fractional numbers with denominator 1008 - For the 1st fraction, since 63 × 16 = 1008,
21/63 = 21 × 16/63 × 16 = 336/1008 - Likewise, for the 2nd fraction, since 16 × 63 = 1008,
25/16 = 25 × 63/16 × 63 = 1575/1008 - Subtract the two like fractions:
336/1008 - 1575/1008 = 336 - 1575/1008 = -1239/1008 - After reducing the fraction, the answer is -59/48
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/63-25/16 21/63-50/16 21/63-25/32 21/63-75/16 21/63-25/48 21/63-25/80