If x is a real number, for what values of x is the equation (3x-9)/3=x-3 true?

A) all values of x
B)some values of x
C) no values of x
D)impossible to determine

Question

If x is a real number, for what values of x is the equation (3x-9)/3=x-3 true?

A) all values of x
B)some values of x
C) no values of x
D)impossible to determine

anonymous · Answer

please help(:

anonymous · Answer

anyone?

agent0smith · Answer

Do you know how to simplify the equation, or solve for x?

anonymous · Answer

cross multiply...I just dont know what the description of x would be..like the answer choices

anonymous · Answer

i got 3x-9=3x-9
so what would that be called?

agent0smith · Answer

Well both sides of the equation are equal... what does that mean? Try plugging in a few values for x and see what happens..

anonymous · Answer

which answer would it be?

anonymous · Answer

all values of x?

agent0smith · Answer

If both sides of the equation are equal, what happens when you plug in any value of x? Is the equation always going to be true for any x? If so, then all values of x.

anonymous · Answer

yes

agent0smith · Answer

Those equations are called identity equations, btw. When you get one side equal to the other like x-3 = x-3, it's an identity equation and must be true for all x.