The conquistadors who found lots of gold was

eiffel tower

explanation:

he was able to speed up production of the processing of seeds

listed the works which were

banned by the church=index librorum prohibitorum

questioned many tenets

of the catholic church=

martin luther’s

ninety-five

theses

an authoritative treatise

on witchcraft=mallets maleficarum

a set of meditation, prayer, and

contemplation exercises to

strengthen one’s relationship

with god=spiritual exercises

hope it ✔

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