Change the subject of the equation to x.

A x - y = P

Given 2( a -- b ) = W. Make a the subject

Given A = P -- Prt

Make t the subject

 $v^{2\ }\ =\ \ u\ ^2\ \ \ +\ \ 2\ as\ .\ Make\ a\ the\ subject.$  

V = u + at . Make a the subject

V =  $\ \frac{x}{2}\ \ -\ 1\ \ \ =\ A\ .Make\ x\ the\ subject\$  

 $Q\ =\ 3\ t^2\ \ -\ 5\ x\ h.\$  Make x the subject.

 $Given\ A\ =\ \pi\ r^2\ h\ .\ Make\ r\ the\ subject.$  

Given I =  $Given\ I\ =\ \frac{PRT}{100}\ \ .\ Make\ T\ the\ subject$  

The volume of a cylinder is   $V\ =\ \pi\ r\ ^2\ h\ .\ Make\ r\ the\ subject\ of\ the\ equation.$