View Full Version : 3(x   1) = -2(x - 1) -4
 
 lil_dre321
Oct 13, 2010, 11:02 AM
 Unknown008
Oct 13, 2010, 11:10 AM
Hm... now it seems you missed the plus sign... 
 
You need to solve for x?
 
Use the distributive law first.
 
3(x+1) = -2(x - 1) -4
 
3x + 3 = -2x + 2 - 4
 
Simplify now and send all the terms in x on one side and all the other terms on another side of the equal sign.
 
Can you get it now? Post what you get! :)
 lil_dre321
Oct 13, 2010, 11:13 AM
 lil_dre321
Oct 13, 2010, 11:34 AM
hmm yeah I did misplaced a plus sign 
I then subtract 2 from oppisites sides of the equation which leaves me with
3x + 1 = -2x - 4
     -1           -1
3x = -2x -5
-2x   -2x
x = -5
 lil_dre321
Oct 13, 2010, 11:35 AM
Am I right..?
 Unknown008
Oct 13, 2010, 11:37 AM
Not quite. 
 
3x = -2x -5
 
Add 2x, not subtract.
 
Because -2x -2x = -4x.
 
So, in your work, you are doing:
 
3x - 2x = -2x -5 - 2x
 
x = -4x -5