quote:
	originally posted by yosup: It's a surprising change that I'm doing my homework. Would some math wizard/anyone who passed Grade 9 Mathematics answer me this? Have I done this question right? 3x - (x + 4) = -x + 8 3x - 4x = -x + 8 3x - 4x + x = 8 x = 8 [Edited by yosup, 3/11/2009 4:37:07 PM]

Nope.
The second step, you multiplied x and 4. You should have added.

Should look like this.

3x - (x + 4) = -x + 8
-(x + 4) = -4x + 8
-x - 4 = -4x + 8
-4 = -3x + 8
3x = 12

x = 4

I don't like the way you did that Thrawn.
>_>

I set mine up this way:

3x - (x + 4) = -x + 8
3x - x - 4 = -x + 8
2x - 4 = -x + 8
3x = 12
x = 4