HDGBuiKhanhLinh
[179703]
13/05/2024 10:00:19 PM
Máthhhhhhhhhhhhhh
$P = \dfrac{{6x + 7}}{{3x - 4}} = \dfrac{{2\left( {3x - 4} \right) + 15}}{{3x - 4}} = 2 + \dfrac{{15}}{{3x - 4}} \in \mathbb{Z}$
$ \Leftrightarrow 3x - 4 \in \left\{ { \pm 1; \pm 3; \pm 5; \pm 15} \right\} \Rightarrow x \in \left\{ {1;3} \right\}.$