$\frac{4}{5}\backslash frac\{4\}\{5\}$ the of 1 hour = ……minutes.

The measurements of a rectangular park are $41\frac{2}{3}41\backslash frac\{2\}\{3\}$ m and $18\frac{3}{5}18\backslash frac\{3\}\{5\}$ m then the area = …… $m^{2}m^2$.

$\frac{a}{y-z}=\frac{b}{z-x}=\frac{c}{x-y}\backslash frac\{a\}\{y-z\}=\backslash frac\{b\}\{z-x\}=\backslash frac\{c\}\{x-y\}$ = then ax + by + cz = …

2a + (-2a) = …

$x^2\times \frac{1}{x^2}x^2\backslash times\backslash frac\{1\}\{x^2\}$ = …… (x $\mathrm{\ne }\backslash neq$ 0).

$-2-\frac{1}{2}+\frac{1}{2}-7-2-\backslash frac\{1\}\{2\}+\backslash frac\{1\}\{2\}-7$ = ……

$\frac{25}{16}\backslash frac\{25\}\{16\}$ = ……

$4.\bar{7}4.\backslash bar\{7\}$ = ……

The natural number 5 can be written as ……

(2 – 3) – 2 = ……