Subtract 9/84 from 42/2
1st number: 21 0/2, 2nd number: 9/84
42/2 - 9/84 is 585/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 2 × 42 = 84,
42/2 = 42 × 42/2 × 42 = 1764/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
9/84 = 9 × 1/84 × 1 = 9/84 - Subtract the two like fractions:
1764/84 - 9/84 = 1764 - 9/84 = 1755/84 - After reducing the fraction, the answer is 585/28
- In mixed form: 2025/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/2-9/84 42/2-18/84 42/4-9/84 42/2-27/84 42/6-9/84 42/2-45/84 42/10-9/84 42/2-63/84 42/14-9/84