9. Uncle Zhang and Uncle Li's combined age is 56 years old. When Uncle Zhang was half of Uncle Li's current age, Uncle Li's age at that time was Uncle Zhang's current age. So, Uncle Zhang is $\qquad$ years old now.
【Answer】 24
【Question Type】Word Problem: Age Problem
【Solution】Let Zhang Uncle be $x$ years old now, and after Zhang Uncle reduces $y$ years, it is half of Li Uncle's age, so Li Uncle's current age is $2(x-y)$
years old. When Zhang Uncle is half of Li Uncle's current age, Li Uncle is $2(x-y)-y$ years old, then $\left\{\begin{array}{l}x+2(x-y)=56 \\ x=2(x-y)-y\end{array}\right.$, solving we get $\left\{\begin{array}{l}y=8 \\ x=24\end{array}\right.$, that is, Zhang Uncle is now 24 years old.