Answers

Add 12/84 and 60/9

1^st number: 12/84, 2^nd number: 6 6/9

12/84 + 60/9 is 143/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 9 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 84 × 3 = 252,
   12/84 = 12 × 3/84 × 3 = 36/252
3. Likewise, for the 2nd fraction, since 9 × 28 = 252,
   60/9 = 60 × 28/9 × 28 = 1680/252
4. Add the two like fractions:
   36/252 + 1680/252 = 36 + 1680/252 = 1716/252
5. 1716/252 simplified gives 143/21
6. So, 12/84 + 60/9 = 143/21
   In mixed form: 617/21

MathStep (Works offline)

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

Related: ²⁴/₈₄+⁶⁰/₉ ¹²/₈₄+⁶⁰/₁₈ ³⁶/₈₄+⁶⁰/₉ ¹²/₈₄+⁶⁰/₂₇ ⁶⁰/₈₄+⁶⁰/₉ ¹²/₈₄+⁶⁰/₄₅ ¹²/₈₄+⁶⁰/₆₃

Add Fractions Calculator