Which expression shows the first step in dividing 5x + 3 by x?

A) 5x/3+3/3

B) 5x/x+3/x

C) 5x/5+3/5

D) 5x/5x+3/5x

B) 5x/x + 3/x

Step-by-step explanation:

Choice B is the only choice showing a correct denominator: x.

Here, the "first step" is apparently to divide each term by the denominator. This is reasonable when the denominator is only one term.

(I'd say the first step is to divide the first term by the first term of the denominator.)