$\left(L5.9\right)\ \ \ \ \ \ \ \ 4-4+6=$  

(a)  

 $\left(L5.9\right)\ \ \ \ \ \ \ 9+3\times6-7=$  

(a)  

 $\left(l5.9\right)\ \ \ \ \ \ \ 6\times5-3+3=$  

(a)  

 $\left(L7.9\right)\ \ \ \ \ \ 6-3\times\left(5+6\right)=$  

(a)  

 $\left(L7.9\right)\ \ \ \ \ 6\left(4+3\right)=$  

(a)  

 $\left(L8.9\right)\ \ \ \ \ 4^{3\ }-2\left(8-5\right)=$  

(a)  

 $\left(L8.9\right)\ \ \ \ \ \ \frac{3^3+6\times5}{\left(5-2\right)}=$  

(a)