Question

как правильно решить пример (6*60):(800:20)+2*60- (240:40)*9=

Answer 1

(6*60):(800:20)+2*60- (240:40)*9=360:(800:20)+2*60-(240:40)*9=
= 360:40+2*60-(240:40)*9=360:40+2*60-6*9=9+2*60-6*9=9+120-54=
=129-54=75.