Subtract 36/9 from 21/54
1st number: 21/54, 2nd number: 4 0/9
21/54 - 36/9 is -65/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 9 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 54 × 1 = 54,
21/54 = 21 × 1/54 × 1 = 21/54 - Likewise, for the 2nd fraction, since 9 × 6 = 54,
36/9 = 36 × 6/9 × 6 = 216/54 - Subtract the two like fractions:
21/54 - 216/54 = 21 - 216/54 = -195/54 - After reducing the fraction, the answer is -65/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/54-36/9 21/54-72/9 21/54-36/18 63/54-36/9 21/54-36/27 21/54-36/45 21/54-36/63