Solve the equation, Check for extraneous solutions.
9| 9-8x| = 2x+3

Question

Solve the equation, Check for extraneous solutions. 
9| 9-8x| = 2x+3

anonymous · Answer

Please help don't understand!

debbieg · Answer

Isolate the abs. value part, first.

You ALWAYS need an equation of the form:

|something|= something

anonymous · Answer

how do you solve with the 9 there?

debbieg · Answer

Sorry, my browser crashed or something and I couldn't respond.

I told you, you need to isolate the abs value first. So how can you get the 9 "away" from the left hand side? what must you do to both sides?

debbieg · Answer

Remember that the absolute value signs are really a "grouping symbol".... so you have

$\Large 9\cdot| 9-8x| = 2x+3 $

Now, in general, if you have
$\Large 9\cdot A = B $  and you want to "isolate A", what do you do?