Solve {l}{5+6-7-8+9+10-11-12+13+14-15-16+17+18-19-20+21}{10}

$$\left. \begin{array} { l } { 5 + 6 - 7 - 8 + 9 + 10 - 11 - 12 + 13 + 14 - 15 - 16 + 17 + 18 - 19 - 20 + 21 } \\ { 10 } \end{array} \right.$$

Sort

$$5,\ 10$$

Solution Steps

Add 5 and 6 to get 11.

$$sort(11-7-8+9+10-11-12+13+14-15-16+17+18-19-20+21,10)$$

Subtract 7 from 11 to get 4.

$$sort(4-8+9+10-11-12+13+14-15-16+17+18-19-20+21,10)$$

Subtract 8 from 4 to get -4.

$$sort(-4+9+10-11-12+13+14-15-16+17+18-19-20+21,10)$$

Add -4 and 9 to get 5.

$$sort(5+10-11-12+13+14-15-16+17+18-19-20+21,10)$$

Add 5 and 10 to get 15.

$$sort(15-11-12+13+14-15-16+17+18-19-20+21,10)$$

Subtract 11 from 15 to get 4.

$$sort(4-12+13+14-15-16+17+18-19-20+21,10)$$

Subtract 12 from 4 to get -8.

$$sort(-8+13+14-15-16+17+18-19-20+21,10)$$

Add -8 and 13 to get 5.

$$sort(5+14-15-16+17+18-19-20+21,10)$$

Add 5 and 14 to get 19.

$$sort(19-15-16+17+18-19-20+21,10)$$

Subtract 15 from 19 to get 4.

$$sort(4-16+17+18-19-20+21,10)$$

Subtract 16 from 4 to get -12.

$$sort(-12+17+18-19-20+21,10)$$

Add -12 and 17 to get 5.

$$sort(5+18-19-20+21,10)$$

Add 5 and 18 to get 23.

$$sort(23-19-20+21,10)$$

Subtract 19 from 23 to get 4.

$$sort(4-20+21,10)$$

Subtract 20 from 4 to get -16.

$$sort(-16+21,10)$$

Add -16 and 21 to get 5.

$$sort(5,10)$$

The list values are already in order.

$$5,10$$

Evaluate

$$5,\ 10$$