Subtract 18/42 from 2/25
2/25 - 18/42 is -61/175.
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,
2/25 = 2 × 42/25 × 42 = 84/1050 - Likewise, for the 2nd fraction, since 42 × 25 = 1050,
18/42 = 18 × 25/42 × 25 = 450/1050 - Subtract the two like fractions:
84/1050 - 450/1050 = 84 - 450/1050 = -366/1050 - After reducing the fraction, the answer is -61/175
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/25-18/42 2/25-36/42 2/50-18/42 2/25-18/84 6/25-18/42 2/25-54/42 2/75-18/42 10/25-18/42 2/25-90/42 14/25-18/42