What improvements did railroads create?
a. mail could be delivered faster
b. products could be shipped easier
c. people could travel farther in less time.
d. all of the above are correct.

answer; /// slavery should be outlawed in the new country, was part of the initial draft of the declaration of independence, but not part of the final

i think that it would be tenth of the first

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