We have been given what seems to be a fairly easy task in calculus.
The answers in the book are not similar to mine, however.

$$
|7 - 3x| = -2
$$

I would assume the correct answer is: $$(0.6, 3)$$

The answer given is: "No solution"

The book has a reputation of having a rather large amount of incorrect answers, which is the reason why I am asking.

Thanks in advance for answer.