Bibles are rare, expensive, and only written in Latin-->low literacy rates-->questionable practices of the church-->Gutenburg's invention-->??? Which of the following is the logical next step in this progression?

a
The Bible was printed in vernacular languages leading to greater criticism of the church.
b
Maps could be updated and printed more regularly to improve navigation.
c
The Catholic Church printed messages from the Pope encouraging missionaries to travel and gain converts.
d
Universities used printing presses to create huge libraries.

I would say C

Explanation:

If the causes listed lead to the invention of the printing press, then I would expect the result (printing press) to be used to further the subject -> Christianity

simplify brackets

8 - 2a - 7 = a + 40

simplify 8 - 2a - 7 to -2a + 1

-2a + 1 = a + 40

add 2a to both sides

1 = a + 40 + 2a

simplify a + 40 + 2a to 3a + 40

1 = 3a + 40

subtract 40 from both sides

1 - 40 = 3a

simplify 1 - 40 o -39

-39 = 3a

divide both sides by 3

-39/3 = a

simplify 39/3 to 13

-13 = a

switch sides

a = -13

the answer is b: an economic crisis throughout the country.