It is known that a and B are opposite to each other, and they are not 0, C and D are reciprocal to each other, and the absolute value of X is 5?

It is known that a and B are opposite to each other, and they are not 0, C and D are reciprocal to each other, and the absolute value of X is 5?

A and B are opposite numbers, a + B = 0,2a / b = - 2;; C and D are reciprocal numbers, then CD = 1
When the original formula = 0 + | x | - 2, x = 5, the answer is 3
When x = - 5, the answer is - 7