Answers

Subtract 21/81 from 2/48

2/48 - 21/81 is -47/216.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 48 and 81 is 1296
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1296
2. For the 1st fraction, since 48 × 27 = 1296,
   2/48 = 2 × 27/48 × 27 = 54/1296
3. Likewise, for the 2nd fraction, since 81 × 16 = 1296,
   21/81 = 21 × 16/81 × 16 = 336/1296
4. Subtract the two like fractions:
   54/1296 - 336/1296 = 54 - 336/1296 = -282/1296
5. After reducing the fraction, the answer is -47/216

MathStep (Works offline)

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

Related: ⁴/₄₈-²¹/₈₁ ²/₄₈-⁴²/₈₁ ²/₉₆-²¹/₈₁ ⁶/₄₈-²¹/₈₁ ²/₄₈-⁶³/₈₁ ¹⁰/₄₈-²¹/₈₁ ¹⁴/₄₈-²¹/₈₁

Subtract Fractions Calculator