Which of the following are true?

Select all that apply.

A $-\left(-9\right)\ =\ 9$−(−9) = 9​

B negative open paren negative 5 close paren is equal to negative 5$-\left(-5\right)\ =\ -5$−(−5) = −5​

C negative open paren 10 close paren is equal to negative 10$-\left(10\right)\ =\ -10$−(10) = −10​

D The opposite of 8$8$8​ will be 8$8$8​ units to the left of 0$0$0​ on a number line.

E The opposite of every number will be to the left of 0$0$0​ on a number line.