Which two parts of this exert with WW Jacobs the monkeys Paul showed that the white family does not believe in the Tulsa's men power ​

The two parts of this excerpt from W. W. Jacobs's "The Monkey's Paw" show that show the White family doesn't believe in the talisman's power are: "Sounds like the 'Arabian Nights,'" said Mrs. White, as she rose and began to set the supper.

substitute y = 2x - 4 to x + 2y = 12:

x + 2(2x - 4) = 12     use distributive property

x + (2)(2x) + () = 12

x + 4x - 8 = 12     add 8 to both sides

5x = 20     divide both sides by 5

x = 4

put the value of x to the first equation:

y = 2(4) - 4

y = 8 - 4

y = 4