Answers

Subtract 8/81 from 63/30

1^st number: 2 3/30, 2^nd number: 8/81

63/30 - 8/81 is 1621/810.

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,
   63/30 = 63 × 27/30 × 27 = 1701/810
3. Likewise, for the 2nd fraction, since 81 × 10 = 810,
   8/81 = 8 × 10/81 × 10 = 80/810
4. Subtract the two like fractions:
   1701/810 - 80/810 = 1701 - 80/810 = 1621/810
5. In mixed form: 21/810

MathStep (Works offline)

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

Related: ⁶³/₃₀-¹⁶/₈₁ ⁶³/₆₀-⁸/₈₁ ⁶³/₃₀-²⁴/₈₁ ⁶³/₉₀-⁸/₈₁ ⁶³/₃₀-⁴⁰/₈₁ ⁶³/₃₀-⁵⁶/₈₁

Subtract Fractions Calculator