Subtract 75/27 from 42/28
1st number: 1 14/28, 2nd number: 2 21/27
42/28 - 75/27 is -23/18.
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,
42/28 = 42 × 27/28 × 27 = 1134/756 - Likewise, for the 2nd fraction, since 27 × 28 = 756,
75/27 = 75 × 28/27 × 28 = 2100/756 - Subtract the two like fractions:
1134/756 - 2100/756 = 1134 - 2100/756 = -966/756 - After reducing the fraction, the answer is -23/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/28-75/27 42/56-75/27 42/28-75/54 42/84-75/27 42/28-75/81