Subtract 90/63 from 81/16
1st number: 5 1/16, 2nd number: 1 27/63
81/16 - 90/63 is 407/112.
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,
81/16 = 81 × 63/16 × 63 = 5103/1008 - Likewise, for the 2nd fraction, since 63 × 16 = 1008,
90/63 = 90 × 16/63 × 16 = 1440/1008 - Subtract the two like fractions:
5103/1008 - 1440/1008 = 5103 - 1440/1008 = 3663/1008 - After reducing the fraction, the answer is 407/112
- In mixed form: 371/112
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/32-90/63 81/48-90/63 81/80-90/63