Question 75305
<pre>
Could you tell me if the answer to this rational expression 3/x +5/x-4 is 3(x-4)+5x/x(x-4)

No.
        3         5
      _____  +  _____
        x       x - 4

Multiply both terms by the LCD x(x-4)

        3         5
x(x-4)_____  +  _____ x(x-4)
        x       x - 4

      3(x-4)       5x
     ________ + ________
      x(x-4)     x(x-4)

Simplify

       3x -12        5x
      _______  +  ________
       x(x-4)     x(x - 4)

      3x - 12 + 5x 
     ______________
        x (x-4)

         8x - 12       4(x-3)
        _________  = __________
         x (x-4)       x(x-4)



Visit my website
http://onlinemathtutorial.tripod.com
Sign my guestbook