Solve {l}{6+12+18}{3+6+9}{5+10+15}

$$\left. \begin{array} { l } { 6 + 12 + 18 } \\ { 3 + 6 + 9 } \\ { 5 + 10 + 15 } \end{array} \right.$$

Sort

$$18,30,36$$

Solution Steps

Add 6 and 12 to get 18.

$$sort(18+18,3+6+9,5+10+15)$$

Add 18 and 18 to get 36.

$$sort(36,3+6+9,5+10+15)$$

Add 3 and 6 to get 9.

$$sort(36,9+9,5+10+15)$$

Add 9 and 9 to get 18.

$$sort(36,18,5+10+15)$$

Add 5 and 10 to get 15.

$$sort(36,18,15+15)$$

Add 15 and 15 to get 30.

$$sort(36,18,30)$$

To sort the list, start from a single element 36.

$$36$$

Insert 18 to the appropriate location in the new list.

$$18,36$$

Insert 30 to the appropriate location in the new list.

$$18,30,36$$

Evaluate

$$36,\ 18,\ 30$$