SOLUTION: Solve the inequality 21/ 15 - 3x < 0, and express the solution as an interval. I got the answer ( 5, 00 )

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Question 82565:
Solve the inequality 21/ 15 - 3x < 0, and express the solution as an interval.
I got the answer ( 5, 00 )
Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
21 / (15 - 3x)
We can start here: 15 - 3x can not equal zero
15 - 3x = 0
15 = 3x
5 = x
Ok, when 15 - 3x is positive, 21 divided by a positive number is .... positive.
When 15 - 3x is negative, 21 divided by a negative number is negative.
Since 21 / (15 - 3x) < 0 .... we need 15 - 3x to be negative or ~> 15 - 3x < 0
15 - 3x < 0
15 < 3x
5 < x
(5,+infinity)
Proof:
graph%28300%2C300%2C-2%2C8%2C-5%2C5%2C21%2F%2815+-+3x%29%29