I NEED THIS ASAP 100 POINTS!! Why is it important to think like a historian?
A) All of the above
B) To help teach us how to think about, question and make connections with
information
C) To help prevent us from being easily swayed by someone's bias
to help us determine the accuracy of information
D) To help us determine the accuracy of information

D

Explanation:

Explanation:

A

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