If 5 - 5/X = 4 + 4/X, then X = Choices: A) 1 B) 9 C) - 1 D) 5 / 4 E) - 4 / 5

Rationale: "we ' re given the equation 5 - 5 / x = 4 + 4 / x . we ' re asked for the value of x . the common - denominator of these 4 numbers is x , so we need to multiply both sides of the equation by x , giving us . . . 5 x - 5 x / x = 4 x + 4 x / x we can then eliminate that denominator , which gives us . . . . 5 x - 5 = 4 x + 4 9 = x b"
Answer: B