Answers

Subtract 30/81 from 45/4

1^st number: 11 1/4, 2^nd number: 30/81

45/4 - 30/81 is 1175/108.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 81 is 324
   
   Next, find the equivalent fraction of both fractional numbers with denominator 324
2. For the 1st fraction, since 4 × 81 = 324,
   45/4 = 45 × 81/4 × 81 = 3645/324
3. Likewise, for the 2nd fraction, since 81 × 4 = 324,
   30/81 = 30 × 4/81 × 4 = 120/324
4. Subtract the two like fractions:
   3645/324 - 120/324 = 3645 - 120/324 = 3525/324
5. After reducing the fraction, the answer is 1175/108
6. In mixed form: 1095/108

MathStep (Works offline)

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

Related: ⁹⁰/₄-³⁰/₈₁ ⁴⁵/₄-⁶⁰/₈₁ ⁴⁵/₈-³⁰/₈₁ ⁴⁵/₄-⁹⁰/₈₁ ⁴⁵/₁₂-³⁰/₈₁ ⁴⁵/₂₀-³⁰/₈₁ ⁴⁵/₂₈-³⁰/₈₁

Subtract Fractions Calculator