Subtract 4/32 from 21/18
1st number: 1 3/18, 2nd number: 4/32
21/18 - 4/32 is 25/24.
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,
4/32 = 4 × 9/32 × 9 = 36/288 - Subtract the two like fractions:
336/288 - 36/288 = 336 - 36/288 = 300/288 - After reducing the fraction, the answer is 25/24
- In mixed form: 11/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/18-4/32 21/18-8/32 21/36-4/32 21/18-4/64 63/18-4/32 21/18-12/32 21/54-4/32 21/18-4/96 21/18-20/32 21/90-4/32 21/18-28/32