Question

When x=5, the value of the expression 20 - 25 + x - 2(x – 10) is:

A) -21
B) -9
C) 9
D) 19

Answer 1

The value of the expression when x=5 is 10.

Step-by-step explanation:

To find the value of the expression when x=5, we substitute x=5 into the expression: 20 - 25 + x - 2(x - 10).

First, we simplify within the parentheses: 2(x - 10) = 2(5 - 10) = 2(-5) = -10.

Now, we substitute into the expression: 20 - 25 + 5 - (-10). We simplify from left to right, following the order of operations: 20 - 25 + 5 + 10 = -5 + 5 + 10 = 0 + 10 = 10.

The value of the expression when x=5 is 10.