Answers

Add 60/81 and 45/12

1^st number: 60/81, 2^nd number: 3 9/12

60/81 + 45/12 is 485/108.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 12 is 324
   
   Next, find the equivalent fraction of both fractional numbers with denominator 324
2. For the 1st fraction, since 81 × 4 = 324,
   60/81 = 60 × 4/81 × 4 = 240/324
3. Likewise, for the 2nd fraction, since 12 × 27 = 324,
   45/12 = 45 × 27/12 × 27 = 1215/324
4. Add the two like fractions:
   240/324 + 1215/324 = 240 + 1215/324 = 1455/324
5. 1455/324 simplified gives 485/108
6. So, 60/81 + 45/12 = 485/108
   In mixed form: 453/108

MathStep (Works offline)

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

Related: ⁶⁰/₈₁+⁹⁰/₁₂ ⁶⁰/₈₁+⁴⁵/₂₄ ⁶⁰/₈₁+⁴⁵/₃₆ ⁶⁰/₈₁+⁴⁵/₆₀ ⁶⁰/₈₁+⁴⁵/₈₄

Add Fractions Calculator