Subtract 30/75 from 27/28
27/28 - 30/75 is 79/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 75 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 28 × 75 = 2100,
27/28 = 27 × 75/28 × 75 = 2025/2100 - Likewise, for the 2nd fraction, since 75 × 28 = 2100,
30/75 = 30 × 28/75 × 28 = 840/2100 - Subtract the two like fractions:
2025/2100 - 840/2100 = 2025 - 840/2100 = 1185/2100 - After reducing the fraction, the answer is 79/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/28-30/75 27/28-60/75 27/56-30/75 81/28-30/75 27/28-90/75 27/84-30/75