kk tolong dijawab besok dikumpulkan yy plizz

[tex]4. \frac{x}{4.5} = \frac{2.4}{2} \\ \frac{x}{4.5} = 1.2 \\x = 1.2 \times 4.5 \\ x = 5.4 \\ \\ 7.11200000 \times \frac{1}{1400000} \\ \frac{112}{14} \\ 8[/tex]