Answers

Subtract 49/9 from 18/72

1^st number: 18/72, 2^nd number: 5 4/9

18/72 - 49/9 is -187/36.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 9 is 72
   
   Next, find the equivalent fraction of both fractional numbers with denominator 72
2. For the 1st fraction, since 72 × 1 = 72,
   18/72 = 18 × 1/72 × 1 = 18/72
3. Likewise, for the 2nd fraction, since 9 × 8 = 72,
   49/9 = 49 × 8/9 × 8 = 392/72
4. Subtract the two like fractions:
   18/72 - 392/72 = 18 - 392/72 = -374/72
5. After reducing the fraction, the answer is -187/36

MathStep (Works offline)

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

Related: ³⁶/₇₂-⁴⁹/₉ ¹⁸/₇₂-⁹⁸/₉ ¹⁸/₇₂-⁴⁹/₁₈ ⁵⁴/₇₂-⁴⁹/₉ ¹⁸/₇₂-⁴⁹/₂₇ ⁹⁰/₇₂-⁴⁹/₉ ¹⁸/₇₂-⁴⁹/₄₅ ¹⁸/₇₂-⁴⁹/₆₃

Subtract Fractions Calculator