17*53+17*47-92000:(46*17-46*7)
17*53+17*47-92000:(46*17-46*7)=17*(53+47)-92000:(46*(17-7))=17*100-92000:(46*10)=1700-92000:460=1700-200=1500
17*53+17*47-92000:(46*17-46*7)= 17*(53+47)- 92000:46*(17-7)=17*100-92000:(46*10)=
= 1700-92000:460=1700-200=1500