Answers

Add 28/15 and 3/20

1^st number: 1 13/15, 2^nd number: 3/20

28/15 + 3/20 is 121/60.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 20 is 60
   
   Next, find the equivalent fraction of both fractional numbers with denominator 60
2. For the 1st fraction, since 15 × 4 = 60,
   28/15 = 28 × 4/15 × 4 = 112/60
3. Likewise, for the 2nd fraction, since 20 × 3 = 60,
   3/20 = 3 × 3/20 × 3 = 9/60
4. Add the two like fractions:
   112/60 + 9/60 = 112 + 9/60 = 121/60
5. So, 28/15 + 3/20 = 121/60
   In mixed form: 21/60

MathStep (Works offline)

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

Related: ⁵⁶/₁₅+³/₂₀ ²⁸/₁₅+⁶/₂₀ ²⁸/₃₀+³/₂₀ ²⁸/₁₅+³/₄₀ ⁸⁴/₁₅+³/₂₀ ²⁸/₁₅+⁹/₂₀ ²⁸/₄₅+³/₂₀ ²⁸/₁₅+³/₆₀ ²⁸/₁₅+¹⁵/₂₀ ²⁸/₇₅+³/₂₀ ²⁸/₁₅+²¹/₂₀

Add Fractions Calculator