Subtract 25/42 from 18/5
1st number: 3 3/5, 2nd number: 25/42
18/5 - 25/42 is 631/210.
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,
18/5 = 18 × 42/5 × 42 = 756/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
25/42 = 25 × 5/42 × 5 = 125/210 - Subtract the two like fractions:
756/210 - 125/210 = 756 - 125/210 = 631/210 - In mixed form: 31/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/5-25/42 18/5-50/42 18/10-25/42 18/5-25/84 54/5-25/42 18/5-75/42 18/15-25/42 90/5-25/42 18/25-25/42 18/35-25/42