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te rog sa ma ajuti cat fac 2+3+7:9•190:55(√4:7)

Răspuns :

2+3+7:9•190:55(√4:7) =

= 5+7/9*190/55*(2:7) =

= 5+7/9 *38/11 *2/7 =

=5+1/9 *38/11 *2 = 

= 5+76/99 =  ( 495+76)/99 = 571/99
5+0,(7)×190:55×(2:7)=5+147,(7):55×0,28=5+2,68×0,28=5+0,75=5,75