10(a+2b+3c)=

(a)  

-2(w+5)=

(a)  

-5(8a-7w)=

(a)  

a(c+2)=

(a)  

-4a(8x-3)=

(a)  

a(a+2)=

(a)  

4c(2a+5c)=

(a)  

5(y+3)+2(y+7)=

(a)  

4(w+7)-2(2w+1)=

(a)