Subtract 9/42 from 9/2
1st number: 4 1/2, 2nd number: 9/42
9/2 - 9/42 is 30/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
9/2 = 9 × 21/2 × 21 = 189/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
9/42 = 9 × 1/42 × 1 = 9/42 - Subtract the two like fractions:
189/42 - 9/42 = 189 - 9/42 = 180/42 - After reducing the fraction, the answer is 30/7
- In mixed form: 42/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/2-9/42 9/2-18/42 9/4-9/42 9/2-9/84 27/2-9/42 9/2-27/42 9/6-9/42 45/2-9/42 9/2-45/42 9/10-9/42 63/2-9/42 9/2-63/42 9/14-9/42