Question

Is x = 13 a solution to the equation x – 9 = 4?

A.
No, because 13 – 9 = 4 is not true.
B.
Yes, because 13 – 9 = 4 is true.
C.
No, because 13 – 9 = 4 is true.
D.
Yes, because 13 – 9 = 4 is not true

Answer 1

Answer: B. Yes because 13 - 9 = 4 is true.

Basically we replace x with 13 to get what is shown in bold.