Answers

Add 20/15 and 20/45

1^st number: 1 5/15, 2^nd number: 20/45

20/15 + 20/45 is 16/9.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 45 is 45
2. For the 1st fraction, since 15 × 3 = 45,
   20/15 = 20 × 3/15 × 3 = 60/45
3. Likewise, for the 2nd fraction, since 45 × 1 = 45,
   20/45 = 20 × 1/45 × 1 = 20/45
4. Add the two fractions:
   60/45 + 20/45 = 60 + 20/45 = 80/45
5. 80/45 simplified gives 16/9
6. So, 20/15 + 20/45 = 16/9
   In mixed form: 17/9

MathStep (Works offline)

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

Related: ⁴⁰/₁₅+²⁰/₄₅ ²⁰/₁₅+⁴⁰/₄₅ ²⁰/₃₀+²⁰/₄₅ ²⁰/₁₅+²⁰/₉₀ ⁶⁰/₁₅+²⁰/₄₅ ²⁰/₁₅+⁶⁰/₄₅ ²⁰/₄₅+²⁰/₄₅ ²⁰/₇₅+²⁰/₄₅

Add Fractions Calculator