Answers

Subtract 35/81 from 84/30

1^st number: 2 24/30, 2^nd number: 35/81

84/30 - 35/81 is 959/405.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 81 is 810
   
   Next, find the equivalent fraction of both fractional numbers with denominator 810
2. For the 1st fraction, since 30 × 27 = 810,
   84/30 = 84 × 27/30 × 27 = 2268/810
3. Likewise, for the 2nd fraction, since 81 × 10 = 810,
   35/81 = 35 × 10/81 × 10 = 350/810
4. Subtract the two like fractions:
   2268/810 - 350/810 = 2268 - 350/810 = 1918/810
5. After reducing the fraction, the answer is 959/405
6. In mixed form: 2149/405

MathStep (Works offline)

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

Related: ⁸⁴/₃₀-⁷⁰/₈₁ ⁸⁴/₆₀-³⁵/₈₁ ⁸⁴/₉₀-³⁵/₈₁

Subtract Fractions Calculator