SOLUTION: 5x + 4 ------- x - 7 find any numbers for which each rational expression is undefined?

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: 5x + 4 ------- x - 7 find any numbers for which each rational expression is undefined?      Log On


   

Question 469990: 5x + 4
-------
x - 7
find any numbers for which each rational expression is undefined?
Answer by sofiyac(983) About Me  (Show Source):
You can put this solution on YOUR website!
it's undefined for x=7 since
x-7=0
x=7
we can't divide by zero, so x can't be 7