Subtract 18/42 from 9/5
1st number: 1 4/5, 2nd number: 18/42
9/5 - 18/42 is 48/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 5 × 42 = 210,
9/5 = 9 × 42/5 × 42 = 378/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
18/42 = 18 × 5/42 × 5 = 90/210 - Subtract the two like fractions:
378/210 - 90/210 = 378 - 90/210 = 288/210 - After reducing the fraction, the answer is 48/35
- In mixed form: 113/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/5-18/42 9/5-36/42 9/10-18/42 9/5-18/84 27/5-18/42 9/5-54/42 9/15-18/42 45/5-18/42 9/5-90/42 9/25-18/42 63/5-18/42 9/35-18/42