Answers

Add 25/15 and 40/81

1^st number: 1 10/15, 2^nd number: 40/81

25/15 + 40/81 is 175/81.

Steps for adding 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,
   25/15 = 25 × 27/15 × 27 = 675/405
3. Likewise, for the 2nd fraction, since 81 × 5 = 405,
   40/81 = 40 × 5/81 × 5 = 200/405
4. Add the two like fractions:
   675/405 + 200/405 = 675 + 200/405 = 875/405
5. 875/405 simplified gives 175/81
6. So, 25/15 + 40/81 = 175/81
   In mixed form: 213/81

MathStep (Works offline)

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

Related: ⁵⁰/₁₅+⁴⁰/₈₁ ²⁵/₁₅+⁸⁰/₈₁ ²⁵/₃₀+⁴⁰/₈₁ ⁷⁵/₁₅+⁴⁰/₈₁ ²⁵/₄₅+⁴⁰/₈₁ ²⁵/₇₅+⁴⁰/₈₁

Add Fractions Calculator