Answers

Subtract 6/81 from 30/8

1^st number: 3 6/8, 2^nd number: 6/81

30/8 - 6/81 is 397/108.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 81 is 648
   
   Next, find the equivalent fraction of both fractional numbers with denominator 648
2. For the 1st fraction, since 8 × 81 = 648,
   30/8 = 30 × 81/8 × 81 = 2430/648
3. Likewise, for the 2nd fraction, since 81 × 8 = 648,
   6/81 = 6 × 8/81 × 8 = 48/648
4. Subtract the two like fractions:
   2430/648 - 48/648 = 2430 - 48/648 = 2382/648
5. After reducing the fraction, the answer is 397/108
6. In mixed form: 373/108

MathStep (Works offline)

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

Related: ⁶⁰/₈-⁶/₈₁ ³⁰/₈-¹²/₈₁ ³⁰/₁₆-⁶/₈₁ ⁹⁰/₈-⁶/₈₁ ³⁰/₈-¹⁸/₈₁ ³⁰/₂₄-⁶/₈₁ ³⁰/₈-³⁰/₈₁ ³⁰/₄₀-⁶/₈₁ ³⁰/₈-⁴²/₈₁ ³⁰/₅₆-⁶/₈₁

Subtract Fractions Calculator