Subtract 21/16 from 36/18
1st number: 2 0/18, 2nd number: 1 5/16
36/18 - 21/16 is 11/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 16 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 18 × 8 = 144,
36/18 = 36 × 8/18 × 8 = 288/144 - Likewise, for the 2nd fraction, since 16 × 9 = 144,
21/16 = 21 × 9/16 × 9 = 189/144 - Subtract the two like fractions:
288/144 - 189/144 = 288 - 189/144 = 99/144 - After reducing the fraction, the answer is 11/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/18-21/16 36/18-42/16 36/18-21/32 36/18-63/16 36/54-21/16 36/18-21/48 36/90-21/16 36/18-21/80