Answers

Subtract 8/27 from 7/28

7/28 - 8/27 is -5/108.

Steps for subtracting fractions

1. 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
2. For the 1st fraction, since 28 × 27 = 756,
   7/28 = 7 × 27/28 × 27 = 189/756
3. Likewise, for the 2nd fraction, since 27 × 28 = 756,
   8/27 = 8 × 28/27 × 28 = 224/756
4. Subtract the two like fractions:
   189/756 - 224/756 = 189 - 224/756 = -35/756
5. After reducing the fraction, the answer is -5/108

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related: ¹⁴/₂₈-⁸/₂₇ ⁷/₂₈-¹⁶/₂₇ ⁷/₅₆-⁸/₂₇ ⁷/₂₈-⁸/₅₄ ²¹/₂₈-⁸/₂₇ ⁷/₂₈-²⁴/₂₇ ⁷/₈₄-⁸/₂₇ ⁷/₂₈-⁸/₈₁ ³⁵/₂₈-⁸/₂₇ ⁷/₂₈-⁴⁰/₂₇ ⁴⁹/₂₈-⁸/₂₇ ⁷/₂₈-⁵⁶/₂₇

Subtract Fractions Calculator