What did Reagan’s "peace through strength” Cold War approach mean? a. He wanted to cut ties with the USSR.
b. He wanted to increase the national defense.
c. He wanted to spend less money on the US military.
d. He wanted to send diplomats to communist countries.

B

Explanation:

Don't listen to the others, it's He wanted to increase the national defense, got it right on edge 2020

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