Question

Which point represents -(-10) - (-10) on the number line?

A) -20
B) 0
C) 10
D) 20

Answer 1

To solve the expression -(-10) - (-10), simplify -(-10) to 10, then perform the subtraction of a negative number as addition, resulting in the answer of 20.

Step-by-step explanation:

To solve the expression -(-10) - (-10), we follow the rules of order of operations, which dictate that we perform the operations inside parentheses first. In this case, -(-10) simplifies to 10. So the expression becomes 10 - (-10). The subtraction of a negative number is the same as adding the positive number, so 10 - (-10) is equivalent to 10 + 10, which equals 20. Therefore, the point representing -(-10) - (-10) on the number line is D) 20.