(178+789*62)/(125*789-433) 急!

问题描述:

(178+789*62)/(125*789-433) 急!

(178+789*62)/(125*789-433)
=(178+48918)/(98625-433)
=49096/98192
=0.5

0.61057927326

(178+789*62)/(125*789-433)
=(178+789*62)/(124*789+356)
=(178+789*62)/2*(178+789*62)
=1/2