5×X-23>_ 22/+235×X>_45/:5X>_9=>X€{9,10,11...}
[tex] 5 \cdot x - 23 \geq 22 \iff \\5 \cdot x \geq 22 + 23 \iff \\5 \cdot x \geq 45~~~| : 5 \iff \\x \geq 9 \Rightarrow x \in [9;+ \infty) [/tex]
