Which of the following projects best fulfilled Cyrus Avery's vision for the future of the United States? A. the development of the US interstate highway system B. the construction of the Alaska pipeline C. the completion of the transcontinental railroad D. the invention of the tractor-trailer

the puritans were a group of people who grew discontent in the church of england the common unity strengthened the community.

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