Just need to know the answer

John Brown :)

Explanation:

Harpers Ferry Raid, (October 16–18, 1859), assault by an armed band of abolitionists led by John Brown on the federal armoury located at Harpers Ferry, Virginia (now in West Virginia). It was a main precipitating incident to the American Civil War.

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

c) he felt the constitution clearly gave states this right.