cum se rezolva asta?

Cum Se Rezolva Asta class=

Răspuns :

5×X-23>_ 22/+23
5×X>_45/:5
X>_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]