The expression
(x2y2z2y4z2x5)1\displaystyle {\left({\frac{{{x}^{{-{{2}}}}{y}^{{2}}{z}^{{-{{2}}}}}}{{{y}^{{-{{4}}}}{z}^{{2}}{x}^{{-{{5}}}}}}}\right)}^{{-{{1}}}}

equals zrxsyt\displaystyle \frac{{z}^{{r}}}{{{x}^{{s}}{y}^{{t}}}} where
r\displaystyle {r}, the exponent of z\displaystyle {z}, is:
s\displaystyle {s}, the exponent of x\displaystyle {x}, is:
t\displaystyle {t}, the exponent of y\displaystyle {y}, is:
[NOTE: Your answers cannot be algebraic expressions.]