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Do you want learn how to work with absolute values?

I just don't get it. >.<

This definition is stating that the absolute value is a POSITIVE number.

Let me show you with your question how to apply this definition.

Ah. I see. Thank you very much for helping me. I appreciate it. Continue, please. :3

|dw:1361364277172:dw|

See here http://www.wolframalpha.com/input/?i=abs%28x%29

Can you solve the equation $$9x +9 =18$$

Similarly we use the same argument for the opposite of 18 or -18....

With 9x + 9 = 18, the "x" stands for 3, right? :o

does 9(3) + 9 =?= 18

27 + 9
=36 =/=18

Think of it this way:|dw:1361365016230:dw|

So... The answer is 18x?

No, try and solve for x in $$9x + 9 = 18$$

|dw:1361365237300:dw|

@AriannaA Do you follow what I just did?

I'm really confused now.

Concentrate on ONLY solving the equation. Subtract 9 from both sides, then divide both sides by 9

|dw:1361365682344:dw|

|dw:1361365739823:dw|

9x+9=18 and 9x+9=-18 this is taken from definition of the absolute value.

So 18=18 is the answer? I'm sorry if I'm being difficult.

x = 1 is the answer

you have to solve for x
because x is the only thing we do not know here.

Oh. I see. :o

Do you understand how I got this answer?

Do you want me to continue?

@AriannaA Are you still there?