Answers

Subtract 10/81 from 70/15

1^st number: 4 10/15, 2^nd number: 10/81

70/15 - 10/81 is 368/81.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 81 is 405
   
   Next, find the equivalent fraction of both fractional numbers with denominator 405
2. For the 1st fraction, since 15 × 27 = 405,
   70/15 = 70 × 27/15 × 27 = 1890/405
3. Likewise, for the 2nd fraction, since 81 × 5 = 405,
   10/81 = 10 × 5/81 × 5 = 50/405
4. Subtract the two like fractions:
   1890/405 - 50/405 = 1890 - 50/405 = 1840/405
5. After reducing the fraction, the answer is 368/81
6. In mixed form: 444/81

MathStep (Works offline)

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

Related: ⁷⁰/₁₅-²⁰/₈₁ ⁷⁰/₃₀-¹⁰/₈₁ ⁷⁰/₁₅-³⁰/₈₁ ⁷⁰/₄₅-¹⁰/₈₁ ⁷⁰/₁₅-⁵⁰/₈₁ ⁷⁰/₇₅-¹⁰/₈₁ ⁷⁰/₁₅-⁷⁰/₈₁

Subtract Fractions Calculator