Answers

Subtract 81/36 from 30/56

1^st number: 30/56, 2^nd number: 2 9/36

30/56 - 81/36 is -12/7.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 36 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 56 × 9 = 504,
   30/56 = 30 × 9/56 × 9 = 270/504
3. Likewise, for the 2nd fraction, since 36 × 14 = 504,
   81/36 = 81 × 14/36 × 14 = 1134/504
4. Subtract the two like fractions:
   270/504 - 1134/504 = 270 - 1134/504 = -864/504
5. After reducing the fraction, the answer is -12/7

MathStep (Works offline)

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

Related: ⁶⁰/₅₆-⁸¹/₃₆ ³⁰/₅₆-⁸¹/₇₂ ⁹⁰/₅₆-⁸¹/₃₆

Subtract Fractions Calculator