Answers

Add 42/6 and 18/81

1^st number: 7 0/6, 2^nd number: 18/81

42/6 + 18/81 is 65/9.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 6 and 81 is 162
   
   Next, find the equivalent fraction of both fractional numbers with denominator 162
2. For the 1st fraction, since 6 × 27 = 162,
   42/6 = 42 × 27/6 × 27 = 1134/162
3. Likewise, for the 2nd fraction, since 81 × 2 = 162,
   18/81 = 18 × 2/81 × 2 = 36/162
4. Add the two like fractions:
   1134/162 + 36/162 = 1134 + 36/162 = 1170/162
5. 1170/162 simplified gives 65/9
6. So, 42/6 + 18/81 = 65/9
   In mixed form: 72/9

MathStep (Works offline)

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

Related: ⁸⁴/₆+¹⁸/₈₁ ⁴²/₆+³⁶/₈₁ ⁴²/₁₂+¹⁸/₈₁ ⁴²/₆+⁵⁴/₈₁ ⁴²/₁₈+¹⁸/₈₁ ⁴²/₆+⁹⁰/₈₁ ⁴²/₃₀+¹⁸/₈₁

Add Fractions Calculator