Решите уравнение 8/9=Y/4 1,8/12=7/Z

[latex] \frac{8}{9} = \frac{y}{4} [/latex] [latex] y=\frac{8}{9}*4[/latex] [latex]y=\frac{32}{9}[/latex] [latex]y=3\frac{5}{9}[/latex] [latex] \frac{1.8}{12} = \frac{7}{z} [/latex] [latex]z=7: \frac{1.8}{12}[/latex] [latex]z=7* \frac{12}{1.8}[/latex] [latex]z= \frac{7*2}{0.3}[/latex] [latex]z= \frac{14*10}{3}[/latex] [latex]z= \frac{140}{3}[/latex] [latex]z=46 \frac{2}{3} [/latex]