Subtract 42/84 from 9/2
1st number: 4 1/2, 2nd number: 42/84
9/2 - 42/84 is 4/1.
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,
9/2 = 9 × 42/2 × 42 = 378/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
42/84 = 42 × 1/84 × 1 = 42/84 - Subtract the two like fractions:
378/84 - 42/84 = 378 - 42/84 = 336/84 - After reducing the fraction, the answer is 4/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/2-42/84 9/4-42/84 27/2-42/84 9/6-42/84 45/2-42/84 9/10-42/84 63/2-42/84 9/14-42/84