简便运算:(51×11×19)÷(57×77×17)

问题描述:

简便运算:(51×11×19)÷(57×77×17)

(51×11×19)÷(57×77×17)
=(51÷17)x(11÷77)x(19÷57)
=3x1/7x1/3
=1/7
如果本题有什么不明白可以追问,