Answers

Subtract 3/81 from 40/10

1^st number: 4 0/10, 2^nd number: 3/81

40/10 - 3/81 is 107/27.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 81 is 810
   
   Next, find the equivalent fraction of both fractional numbers with denominator 810
2. For the 1st fraction, since 10 × 81 = 810,
   40/10 = 40 × 81/10 × 81 = 3240/810
3. Likewise, for the 2nd fraction, since 81 × 10 = 810,
   3/81 = 3 × 10/81 × 10 = 30/810
4. Subtract the two like fractions:
   3240/810 - 30/810 = 3240 - 30/810 = 3210/810
5. After reducing the fraction, the answer is 107/27
6. In mixed form: 326/27

MathStep (Works offline)

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

Related: ⁸⁰/₁₀-³/₈₁ ⁴⁰/₁₀-⁶/₈₁ ⁴⁰/₂₀-³/₈₁ ⁴⁰/₁₀-⁹/₈₁ ⁴⁰/₃₀-³/₈₁ ⁴⁰/₁₀-¹⁵/₈₁ ⁴⁰/₅₀-³/₈₁ ⁴⁰/₁₀-²¹/₈₁ ⁴⁰/₇₀-³/₈₁

Subtract Fractions Calculator