Subtract 8/28 from 27/30
27/30 - 8/28 is 43/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 30 × 14 = 420,
27/30 = 27 × 14/30 × 14 = 378/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
8/28 = 8 × 15/28 × 15 = 120/420 - Subtract the two like fractions:
378/420 - 120/420 = 378 - 120/420 = 258/420 - After reducing the fraction, the answer is 43/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/30-8/28 27/30-16/28 27/60-8/28 27/30-8/56 81/30-8/28 27/30-24/28 27/90-8/28 27/30-8/84 27/30-40/28 27/30-56/28