Răspuns: [tex]x\:\in \:\bigg[-\dfrac{3}{5} ;1\bigg][/tex]
Explicație pas cu pas:
[tex]2\leq 7-5x\leq 10\:\:\:\:\:\:\:\:\:\bigg|-7[/tex]
[tex]2-7\leq 7-5x-7\leq 10-7[/tex]
[tex]-5\leq -5x\leq 3\:\:\:\:\:\:\:\:\bigg|:(-5)[/tex]
[tex]1\geq x\geq -\dfrac{3}{5} \Rightarrow\boxed{\:x\:\in \:\bigg[-\dfrac{3}{5} ;1\bigg]\:}[/tex]