If , what is the value of
?
2
5
7
12
Choice A is correct. Adding the like terms on the left-hand side of the given equation yields . Dividing both sides of this equation by 5 yields
.
Choice B is incorrect and may result from subtracting 5, not dividing by 5, on both sides of the equation . Choice C is incorrect. This is the value of x, not the value of
. Choice D is incorrect. This is the value of
, not the value of
.