Subtract 21/90 from 63/16
1st number: 3 15/16, 2nd number: 21/90
63/16 - 21/90 is 889/240.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 16 × 45 = 720,
63/16 = 63 × 45/16 × 45 = 2835/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
21/90 = 21 × 8/90 × 8 = 168/720 - Subtract the two like fractions:
2835/720 - 168/720 = 2835 - 168/720 = 2667/720 - After reducing the fraction, the answer is 889/240
- In mixed form: 3169/240
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/16-42/90 63/32-21/90 63/16-63/90 63/48-21/90 63/80-21/90