Subtract 3/32 from 21/18
1st number: 1 3/18, 2nd number: 3/32
21/18 - 3/32 is 103/96.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 32 is 288
Next, find the equivalent fraction of both fractional numbers with denominator 288 - For the 1st fraction, since 18 × 16 = 288,
21/18 = 21 × 16/18 × 16 = 336/288 - Likewise, for the 2nd fraction, since 32 × 9 = 288,
3/32 = 3 × 9/32 × 9 = 27/288 - Subtract the two like fractions:
336/288 - 27/288 = 336 - 27/288 = 309/288 - After reducing the fraction, the answer is 103/96
- In mixed form: 17/96
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/18-3/32 21/18-6/32 21/36-3/32 21/18-3/64 63/18-3/32 21/18-9/32 21/54-3/32 21/18-3/96 21/18-15/32 21/90-3/32 21/18-21/32