Answers

Add 15/40 and 27/80

15/40 + 27/80 is 57/80.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 80 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 40 × 2 = 80,
   15/40 = 15 × 2/40 × 2 = 30/80
3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
   27/80 = 27 × 1/80 × 1 = 27/80
4. Add the two like fractions:
   30/80 + 27/80 = 30 + 27/80 = 57/80
5. So, 15/40 + 27/80 = 57/80

MathStep (Works offline)

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

Related: ³⁰/₄₀+²⁷/₈₀ ¹⁵/₄₀+⁵⁴/₈₀ ¹⁵/₈₀+²⁷/₈₀ ⁴⁵/₄₀+²⁷/₈₀ ¹⁵/₄₀+⁸¹/₈₀ ⁷⁵/₄₀+²⁷/₈₀

Add Fractions Calculator