Subtract 21/54 from 84/2
1st number: 42 0/2, 2nd number: 21/54
84/2 - 21/54 is 749/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 54 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 2 × 27 = 54,
84/2 = 84 × 27/2 × 27 = 2268/54 - Likewise, for the 2nd fraction, since 54 × 1 = 54,
21/54 = 21 × 1/54 × 1 = 21/54 - Subtract the two like fractions:
2268/54 - 21/54 = 2268 - 21/54 = 2247/54 - After reducing the fraction, the answer is 749/18
- In mixed form: 4111/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/2-42/54 84/4-21/54 84/2-63/54 84/6-21/54 84/10-21/54 84/14-21/54