Use the following equations to construct an equation for w that involves only the variables a and b.
A) X*W = Y*T
B) X/A=B
C) A^3*y=B
D) A^2= T*B
$\displaystyle W = \dfrac{YT}{X}$
$\displaystyle X = AB$
$\displaystyle Y = \dfrac{B}{A^3}$
$\displaystyle T = \dfrac{A^2}{B}$
Using this sub in the first equation
$\displaystyle W = \dfrac{\dfrac{B}{A^3} \cdot \dfrac{A^2}{B}}{AB}$
I'll leave it up to you to simplify