Deng Xiaoping's idea of Four Modernizations called for progress in what four areas? O A Interational politics, Industry, the arts, and agriculture
B. agriculture, Industry, defense, and science and technology
C. education, industry, defense, and agriculture
D. agriculture, education, the arts, and industry

it further strained relations between the north and the south and convinced

hello there the answer is a

sorry if i am wrong hope that : )

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