I'm currently taking math 111 right now (algebra) so this should be an easy question to answer for you guys. I haven't had math in over a couple years, and I definitely wasn't very into math at the time so I've long forgotten all this "review" stuff. LOL
Basically, what I want to know is for this equation:
Why can't I just invert both sides of the equation and solve for t? When I do that I get:
I know what the proper procedure is, I just want to know why this doesn't work, since it apparently doesn't. I know that you can do anything to one side of the equation as long as you do it to the other side as well.... So is there some step or rule that I'm missing here, or am I messing something up when solving for t? I need to know why this doesn't work, so I know when not to use this method.
Thanks.
-tkr
Basically, what I want to know is for this equation:
Rich (BB code):
1 1 3
--- + --- = ----
t 6 2t
Rich (BB code):
2t
3 * (t + 6) = ---- * 3
3
3t + 18 = 2t
t = -18..... ???? (the answer is supposed to be 3)
Thanks.
-tkr