Answers

Add 15/18 and 54/12

1^st number: 15/18, 2^nd number: 4 6/12

15/18 + 54/12 is 16/3.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 12 is 36
   
   Next, find the equivalent fraction of both fractional numbers with denominator 36
2. For the 1st fraction, since 18 × 2 = 36,
   15/18 = 15 × 2/18 × 2 = 30/36
3. Likewise, for the 2nd fraction, since 12 × 3 = 36,
   54/12 = 54 × 3/12 × 3 = 162/36
4. Add the two like fractions:
   30/36 + 162/36 = 30 + 162/36 = 192/36
5. 192/36 simplified gives 16/3
6. So, 15/18 + 54/12 = 16/3
   In mixed form: 51/3

MathStep (Works offline)

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

Related: ³⁰/₁₈+⁵⁴/₁₂ ¹⁵/₃₆+⁵⁴/₁₂ ¹⁵/₁₈+⁵⁴/₂₄ ⁴⁵/₁₈+⁵⁴/₁₂ ¹⁵/₅₄+⁵⁴/₁₂ ¹⁵/₁₈+⁵⁴/₃₆ ⁷⁵/₁₈+⁵⁴/₁₂ ¹⁵/₉₀+⁵⁴/₁₂ ¹⁵/₁₈+⁵⁴/₆₀ ¹⁵/₁₈+⁵⁴/₈₄

Add Fractions Calculator