Răspuns :
[tex]x-( \frac{10}{100} *x)=162[/tex]
[tex] \frac{100x-10x}{100} =162[/tex]
[tex] \frac{90}{100} x=162[/tex]
[tex]x=162: \frac{90}{100} [/tex]
[tex]x=180 lei.[/tex]
[tex] \frac{100x-10x}{100} =162[/tex]
[tex] \frac{90}{100} x=162[/tex]
[tex]x=162: \frac{90}{100} [/tex]
[tex]x=180 lei.[/tex]