SOLUTION: Find all the numbers which the rational expression is undefined. 4 over 9y+7 This is supposed to be a fraction

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Question 332031: Find all the numbers which the rational expression is undefined.
4 over 9y+7
This is supposed to be a fraction

Answer by user_dude2008(1862)   (Show Source): You can put this solution on YOUR website!
9y+7=0 ---> 9y=-7 ---> y = -7/9

Undefined when