1-(0.5-4/9)*3*{-2-(-27)}-|1/8-0.25|

问题描述:

1-(0.5-4/9)*3*{-2-(-27)}-|1/8-0.25|

1-(0.5-4/9)*3*{-2-(-27)}-|1/8-0.25|
=1-(1/2-4/9)*3*25-1/8
=1-1/6*25-1/8
=79/24