(4/17+1/25)*17*25怎麼樣簡算,

(4/17+1/25)*17*25怎麼樣簡算,


(4/17+1/25)*17*25
=4/17x17x25+1/25x25x17
=100+17
=117
如果本題有什麼不明白可以追問,