Subtract 25/42 from 18/2
1st number: 9 0/2, 2nd number: 25/42
18/2 - 25/42 is 353/42.
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,
18/2 = 18 × 21/2 × 21 = 378/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
25/42 = 25 × 1/42 × 1 = 25/42 - Subtract the two like fractions:
378/42 - 25/42 = 378 - 25/42 = 353/42 - In mixed form: 817/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/2-25/42 18/2-50/42 18/4-25/42 18/2-25/84 54/2-25/42 18/2-75/42 18/6-25/42 90/2-25/42 18/10-25/42 18/14-25/42