Subtract 18/42 from 35/2
1st number: 17 1/2, 2nd number: 18/42
35/2 - 18/42 is 239/14.
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,
35/2 = 35 × 21/2 × 21 = 735/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
18/42 = 18 × 1/42 × 1 = 18/42 - Subtract the two like fractions:
735/42 - 18/42 = 735 - 18/42 = 717/42 - After reducing the fraction, the answer is 239/14
- In mixed form: 171/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/2-18/42 35/2-36/42 35/4-18/42 35/2-18/84 35/2-54/42 35/6-18/42 35/2-90/42 35/10-18/42 35/14-18/42