Question

Carl has three lengths of cable, 3/6 yard long, 1/4 yard long, and 1/3 yard long, which two pieces together make a length of 20/24 yard?

Answer 1

First you should Simplify
$\frac{20}{24} = \frac{5}{6}$
$\frac{3}{6} + \frac{1}{3} = \frac{5}{6}$


Solution
1. Find the LCM between 6 and 3 which is 8
2. Times 3 and 6 to both sides of the equation respectively.
$\frac{3 \times 3}{18} + \frac{6 \times 1}{18}$
$\frac{9 + 6}{18} = \frac{15}{18}$
3. Simplify the answer by dividing by 3.