Linear Equations in One Variable

Consider the equation 7x − 6 + 3 = 5x + 2x + 5.
Which equation has infinitely many solutions?
Responses
A 9x − 3 = 3x + 6x + 2 + 39x − 3 = 3x + 6x + 2 + 3
B 12(x + 8) = 11x − 512(x + 8) = 11x − 5
C 11x − 2x + 15 = 8 + 7 + 9x11x − 2x + 15 = 8 + 7 + 9x
D 5x − 8 = 11 − 7x + 12x

The equation with infinitely many solutions is: A 9x − 3 = 3x + 6x + 2 + 39x − 3 = 3x + 6x + 2 + 3