Subtract 3/16 from 90/21
1st number: 4 6/21, 2nd number: 3/16
90/21 - 3/16 is 459/112.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 16 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 21 × 16 = 336,
90/21 = 90 × 16/21 × 16 = 1440/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
3/16 = 3 × 21/16 × 21 = 63/336 - Subtract the two like fractions:
1440/336 - 63/336 = 1440 - 63/336 = 1377/336 - After reducing the fraction, the answer is 459/112
- In mixed form: 411/112
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/21-6/16 90/42-3/16 90/21-3/32 90/21-9/16 90/63-3/16 90/21-3/48 90/21-15/16 90/21-3/80 90/21-21/16