Answers

Add 27/90 and 80/20

1^st number: 27/90, 2^nd number: 4 0/20

27/90 + 80/20 is 43/10.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 20 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 90 × 2 = 180,
   27/90 = 27 × 2/90 × 2 = 54/180
3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
   80/20 = 80 × 9/20 × 9 = 720/180
4. Add the two like fractions:
   54/180 + 720/180 = 54 + 720/180 = 774/180
5. 774/180 simplified gives 43/10
6. So, 27/90 + 80/20 = 43/10
   In mixed form: 43/10

MathStep (Works offline)

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

Related: ⁵⁴/₉₀+⁸⁰/₂₀ ²⁷/₉₀+⁸⁰/₄₀ ⁸¹/₉₀+⁸⁰/₂₀ ²⁷/₉₀+⁸⁰/₆₀

Add Fractions Calculator