Answers

Subtract 8/18 from 81/36

1^st number: 2 9/36, 2^nd number: 8/18

81/36 - 8/18 is 65/36.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 36 and 18 is 36
   
   Next, find the equivalent fraction of both fractional numbers with denominator 36
2. For the 1st fraction, since 36 × 1 = 36,
   81/36 = 81 × 1/36 × 1 = 81/36
3. Likewise, for the 2nd fraction, since 18 × 2 = 36,
   8/18 = 8 × 2/18 × 2 = 16/36
4. Subtract the two like fractions:
   81/36 - 16/36 = 81 - 16/36 = 65/36
5. In mixed form: 129/36

MathStep (Works offline)

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

Related: ⁸¹/₃₆-¹⁶/₁₈ ⁸¹/₇₂-⁸/₁₈ ⁸¹/₃₆-⁸/₃₆ ⁸¹/₃₆-²⁴/₁₈ ⁸¹/₃₆-⁸/₅₄ ⁸¹/₃₆-⁴⁰/₁₈ ⁸¹/₃₆-⁸/₉₀ ⁸¹/₃₆-⁵⁶/₁₈

Subtract Fractions Calculator