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+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