Subtract 28/42 from 9/25
9/25 - 28/42 is -23/75.
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,
9/25 = 9 × 42/25 × 42 = 378/1050 - Likewise, for the 2nd fraction, since 42 × 25 = 1050,
28/42 = 28 × 25/42 × 25 = 700/1050 - Subtract the two like fractions:
378/1050 - 700/1050 = 378 - 700/1050 = -322/1050 - After reducing the fraction, the answer is -23/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/25-28/42 9/25-56/42 9/50-28/42 9/25-28/84 27/25-28/42 9/25-84/42 9/75-28/42 45/25-28/42 63/25-28/42