[tex] \frac{1}{x} = \frac{2}{10} = \frac{3}{y} = \frac{z}{20} [/tex]
[tex]a)10 = x \times 2[/tex]
[tex]x \times 2 = 10[/tex]
[tex]x = \frac{10}{2} [/tex]
[tex]x = 5[/tex]
[tex]b)y \times 2 = 10 \times 3[/tex]
[tex]y \times 2 = 30[/tex]
[tex]y = \frac{30}{2} [/tex]
[tex]y = 15[/tex]
[tex]c) \frac{3}{15} = \frac{z}{20} [/tex]
[tex]4 \times 3 = 3z[/tex]
[tex]12 = 3z[/tex]
[tex]3z = 12[/tex]
[tex]z = \frac{12}{3} [/tex]
[tex]z = 4[/tex]
(([tex]x = 5[/tex]
[tex]y = 15[/tex]
[tex]z = 4[/tex]))
Sper ca ti-am fost de folos. Succes!!!
