Question

subtract 1/2 from a number and multiply result by 1/2 you get the number

Answer 1

Let the no be x

ATQ
$(x \: - \: \frac{1}{2}) \: \times \frac{1}{2}$
$\frac{x}{2} \: - \: \frac{1}{4}$
$\frac{2x}{4} \: - \: \frac{1}{4}$
$\frac{2x \: - 1}{4}$

HOPE IT HELPS !!!