Question

From the set {2, 17, 19}, use substitution to determine which value of x makes the equation true.

54x = 864

A 17
B 2
C 19
D none of these

Answer 1

54x = 864

A. x = 17 → 54(17) = 918 ≠ 864

B. x = 2 → 54(2) = 108 ≠ 864

C. x = 19 → 54(19) = 1,026 ≠ 864

Answer: D. none of these

Solution

54x = 864     divide both sides by 54

x = 16