Solve {l}{+9+10+11}{1+2+3+4}{+5+6+7+8}

$$\left. \begin{array} { l } { + 9 + 10 + 11 } \\ { 1 + 2 + 3 + 4 } \\ { + 5 + 6 + 7 + 8 } \end{array} \right.$$

Sort

$$10,26,30$$

Solution Steps

Add 9 and 10 to get 19.

$$sort(19+11,1+2+3+4,5+6+7+8)$$

Add 19 and 11 to get 30.

$$sort(30,1+2+3+4,5+6+7+8)$$

Add 1 and 2 to get 3.

$$sort(30,3+3+4,5+6+7+8)$$

Add 3 and 3 to get 6.

$$sort(30,6+4,5+6+7+8)$$

Add 6 and 4 to get 10.

$$sort(30,10,5+6+7+8)$$

Add 5 and 6 to get 11.

$$sort(30,10,11+7+8)$$

Add 11 and 7 to get 18.

$$sort(30,10,18+8)$$

Add 18 and 8 to get 26.

$$sort(30,10,26)$$

To sort the list, start from a single element 30.

$$30$$

Insert 10 to the appropriate location in the new list.

$$10,30$$

Insert 26 to the appropriate location in the new list.

$$10,26,30$$

Evaluate

$$30,\ 10,\ 26$$