Заменим с на -3/4:
7:(4+(-3/4)) - (3(-3/4)-5)= 7:(4-3/4) - (-9/4 - 5)= 7:(13/4) - (-29/4)= 7(4/13) - (-29/4)= 28/13 + 29/4= (428 + 1329) / 13*4= (112 + 377) / 52= 489 / 52= 9.403846...
Ответ: 9.403846...
Заменим с на -3/4:
7:(4+(-3/4)) - (3(-3/4)-5)
= 7:(4-3/4) - (-9/4 - 5)
= 7:(13/4) - (-29/4)
= 7(4/13) - (-29/4)
= 28/13 + 29/4
= (428 + 1329) / 13*4
= (112 + 377) / 52
= 489 / 52
= 9.403846...
Ответ: 9.403846...