Based on source 1, why did indigenous people in both North America and South America create mounds and large temples

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

it might be to see if the person answering knows what they are talking about other than just saying, "its b hope this ! : )" because they could say it then get the wrong answer because they only answered for the points.

rheumatism and the time-limit that a man could work in the chilling-rooms was said to be five years.