Subtract 42/27 from 9/28
1st number: 9/28, 2nd number: 1 15/27
9/28 - 42/27 is -311/252.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 27 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 28 × 27 = 756,
9/28 = 9 × 27/28 × 27 = 243/756 - Likewise, for the 2nd fraction, since 27 × 28 = 756,
42/27 = 42 × 28/27 × 28 = 1176/756 - Subtract the two like fractions:
243/756 - 1176/756 = 243 - 1176/756 = -933/756 - After reducing the fraction, the answer is -311/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/28-42/27 9/28-84/27 9/56-42/27 9/28-42/54 27/28-42/27 9/84-42/27 9/28-42/81 45/28-42/27 63/28-42/27