[1-0÷(4/9-7/17)]×4/5简便运算和(3/8-1/4)÷(8/9+3/4)简便运算,

问题描述:

[1-0÷(4/9-7/17)]×4/5简便运算和(3/8-1/4)÷(8/9+3/4)简便运算,

[1-0÷(4/9-7/17)]×4/5简便运算
解,得:
==1*(4/5)
==4/5
(3/8-1/4)÷(8/9+3/4)简便运算,要过程
解,得:
==(3/8-2/8)÷(32/36+27/36)
==(1/8))÷(59/36)
==(1/8)*(36/59)
==9/118

[1-0÷(4/9-7/17)]×4/5
=[1-0]×4/5
=1×4/5
=4/5
(3/8-1/4)÷(8/9+3/4)
=1/8÷59/36
=9/118