Answers

Add 20/12 and 30/54

1^st number: 1 8/12, 2^nd number: 30/54

20/12 + 30/54 is 20/9.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 54 is 108
2. For the 1st fraction, since 12 × 9 = 108,
   20/12 = 20 × 9/12 × 9 = 180/108
3. Likewise, for the 2nd fraction, since 54 × 2 = 108,
   30/54 = 30 × 2/54 × 2 = 60/108
4. Add the two fractions:
   180/108 + 60/108 = 180 + 60/108 = 240/108
5. 240/108 simplified gives 20/9
6. So, 20/12 + 30/54 = 20/9
   In mixed form: 22/9

MathStep (Works offline)

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

Related: ⁴⁰/₁₂+³⁰/₅₄ ²⁰/₁₂+⁶⁰/₅₄ ²⁰/₂₄+³⁰/₅₄ ⁶⁰/₁₂+³⁰/₅₄ ²⁰/₁₂+⁹⁰/₅₄ ²⁰/₃₆+³⁰/₅₄ ²⁰/₆₀+³⁰/₅₄ ²⁰/₈₄+³⁰/₅₄

Add Fractions Calculator