What was "de facto" segregation?

A. Clear signs that specified where people of different races could be served

B. Separation that occurred through intimidation, violence, and unfair laws

C. Quiet, nonviolent protest of unfair rules that promoted segregation

D. A strategy advocated by the NAACP of being patient with slow progress

B. Separation that occurred through intimidation, violence, and unfair laws.

Explanation:

8 - (2a + 7) = a + 40     distribute/multiply - into (2a + 7)

8 - 2a - 7 = a + 40

1 - 2a = a + 40       add 2a on both sides

1 = 3a + 40         subtract 40 on both sides

-39 = 3a       divide 3 on both sides

-13 = a

[proof]

8 - (2a + 7) = a + 40

8 - (2(-13) + 7) = -13 + 40

8 - (-26 + 7) = 27

8 - (-19) = 27

8 + 19 = 27

27 = 27

that is probably something for you to answer