Răspuns :
[tex] \frac{8}{x} = \frac{0.5}{2.5} [/tex]
[tex]0.5x = 8 \times 2.5[/tex]
[tex]0.5x = 20[/tex]
[tex]x = \frac{20}{0.5} [/tex]
[tex]x = 40[/tex]
[tex]0.5x = 8 \times 2.5[/tex]
[tex]0.5x = 20[/tex]
[tex]x = \frac{20}{0.5} [/tex]
[tex]x = 40[/tex]