Answers

Add 15/40 and 27/8

1^st number: 15/40, 2^nd number: 3 3/8

15/40 + 27/8 is 15/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 8 is 40
2. For the 1st fraction, since 40 × 1 = 40,
   15/40 = 15 × 1/40 × 1 = 15/40
3. Likewise, for the 2nd fraction, since 8 × 5 = 40,
   27/8 = 27 × 5/8 × 5 = 135/40
4. Add the two fractions:
   15/40 + 135/40 = 15 + 135/40 = 150/40
5. After reducing the fraction, the answer is 15/4
6. In mixed form: 33/4

MathStep (Works offline)

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

Related: ³⁰/₄₀+²⁷/₈ ¹⁵/₄₀+⁵⁴/₈ ¹⁵/₈₀+²⁷/₈ ¹⁵/₄₀+²⁷/₁₆ ⁴⁵/₄₀+²⁷/₈ ¹⁵/₄₀+⁸¹/₈ ¹⁵/₄₀+²⁷/₂₄ ⁷⁵/₄₀+²⁷/₈ ¹⁵/₄₀+²⁷/₄₀ ¹⁵/₄₀+²⁷/₅₆

Add Fractions Calculator