Question

Finding the value of the variable by trail and error method.

$\frac{\text{4x}}{\text{5}}\text{=}\frac{\text{1}}{\text{5}}$

Answer 1

Finding the value of $\text{x}$ is

Value of $\text{x}$	L.H.S $\text{=}\frac{\text{4x}}{\text{5}}$	R.H.S $\text{=}\frac{\text{1}}{\text{5}}$	L.H.S $\text{=}$R.H.S (Yes/No)
$\text{0}$	$\frac{\text{4}}{\text{5}}\text{×0 = 0}$	$\frac{\text{1}}{\text{5}}$	NO
$\frac{\text{1}}{\text{4}}$	$\frac{\text{4}}{\text{5}}\text{×}\frac{\text{1}}{\text{4}}\text{=}\frac{\text{1}}{\text{5}}$	$\frac{\text{1}}{\text{5}}$	YES
$\text{21}$	$\frac{\text{4}}{\text{5}}\text{×21 =}\frac{\text{84}}{\text{5}}$	$\frac{\text{1}}{\text{5}}$	NO
$\text{20}$	$\frac{\text{4}}{\text{5}}\text{× 20 = 16}$	$\frac{\text{1}}{\text{5}}$	NO

Hence the value of $\text{x}$ is $\frac{\text{1}}{\text{4}}$