SOLUTION: what value of x will make the rational expression x-3/x+7 undefined?

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Question 452748: what value of x will make the rational expression x-3/x+7 undefined?
Answer by ilana(307) About Me  (Show Source):
You can put this solution on YOUR website!
A rational expression is undefined when the denominator is 0. So in this case, solve the equation x + 7 = 0. It will be undefined when x = -7.