SOLUTION: I had a question on a test which was the absolute value (using l in lieu of the absolute value sign) of l3-5xl=-7. The answer is 0. Is this because x cannot be negative?

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Question 144222: I had a question on a test which was the absolute value (using l in lieu of the absolute value sign) of l3-5xl=-7. The answer is 0. Is this because x cannot be negative?
Answer by nabla(475) About Me  (Show Source):
You can put this solution on YOUR website!
The absolute value of any quantity cannot be negative. The magnitude of 3-5x will always be >=0. Thus, it cannot be equal to -7.
The answer should not be 0; it should be no solution.