Answers

Add 84/12 and 40/54

1^st number: 7 0/12, 2^nd number: 40/54

84/12 + 40/54 is 209/27.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 54 is 108
   
   Next, find the equivalent fraction of both fractional numbers with denominator 108
2. For the 1st fraction, since 12 × 9 = 108,
   84/12 = 84 × 9/12 × 9 = 756/108
3. Likewise, for the 2nd fraction, since 54 × 2 = 108,
   40/54 = 40 × 2/54 × 2 = 80/108
4. Add the two like fractions:
   756/108 + 80/108 = 756 + 80/108 = 836/108
5. 836/108 simplified gives 209/27
6. So, 84/12 + 40/54 = 209/27
   In mixed form: 720/27

MathStep (Works offline)

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

Related: ⁸⁴/₁₂+⁸⁰/₅₄ ⁸⁴/₂₄+⁴⁰/₅₄ ⁸⁴/₃₆+⁴⁰/₅₄ ⁸⁴/₆₀+⁴⁰/₅₄

Add Fractions Calculator