Subtract 18/42 from 30/25
1st number: 1 5/25, 2nd number: 18/42
30/25 - 18/42 is 27/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 42 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 25 × 42 = 1050,
30/25 = 30 × 42/25 × 42 = 1260/1050 - Likewise, for the 2nd fraction, since 42 × 25 = 1050,
18/42 = 18 × 25/42 × 25 = 450/1050 - Subtract the two like fractions:
1260/1050 - 450/1050 = 1260 - 450/1050 = 810/1050 - After reducing the fraction, the answer is 27/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/25-18/42 30/25-36/42 30/50-18/42 30/25-18/84 90/25-18/42 30/25-54/42 30/75-18/42 30/25-90/42