Enter numbers to evaluate - 13-23.

-13-23 = - 13 +

=

Enter numbers to evaluate - 13 - (-23).

-13 - (-23) = - 13 +

=

- 13 - 23 = - 13 + (-23)

= - 36

- 13 - ( - 23) = - 13 + 23

= 10

Step-by-step explanation:

In any order of operation (i. e. addition, subtraction, multiplication, devision) the following rules apply for two values for instance a and b where a > b:

→ If + a and + b then the final sign will be + (positive)

→ If + a and - b then the final sign will be + (positive) since a>b

→ If - a and + b then the final sign will be - (negative) since a>b

→ If - a and - b then the final sign will be - (negative)

In the given question we have two cases.

Case 1:

- 13 - 23 = - 13 + (-23) → since it is given that we add a negative value of - 23, therefore it keeps its sign (so this would be a negative addition i. e. adding two negative values)

Thus we have:

- 13 - 23 = - 13 + (-23)

= - 36

Case 2:

- 13 - ( - 23) = - 13 + 23 → since we stated earlier that - and - gives positive sign (i. e. we subtract two negative values)

Thus we have:

- 13 - ( - 23) = - 13 + 23

= 10

So we can see that:

Adding two Negative values gives a Negative value (Case 1)

Subtracting two Negative values gives a Positive value (Case 2)