Answers

Subtract 7/54 from 45/12

1^st number: 3 9/12, 2^nd number: 7/54

45/12 - 7/54 is 391/108.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 54 is 108
   
   Next, find the equivalent fraction of both fractional numbers with denominator 108
2. For the 1st fraction, since 12 × 9 = 108,
   45/12 = 45 × 9/12 × 9 = 405/108
3. Likewise, for the 2nd fraction, since 54 × 2 = 108,
   7/54 = 7 × 2/54 × 2 = 14/108
4. Subtract the two like fractions:
   405/108 - 14/108 = 405 - 14/108 = 391/108
5. In mixed form: 367/108

MathStep (Works offline)

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

Related: ⁹⁰/₁₂-⁷/₅₄ ⁴⁵/₁₂-¹⁴/₅₄ ⁴⁵/₂₄-⁷/₅₄ ⁴⁵/₁₂-²¹/₅₄ ⁴⁵/₃₆-⁷/₅₄ ⁴⁵/₁₂-³⁵/₅₄ ⁴⁵/₆₀-⁷/₅₄ ⁴⁵/₁₂-⁴⁹/₅₄ ⁴⁵/₈₄-⁷/₅₄

Subtract Fractions Calculator