Пошаговое объяснение:
7 5/13+(4 3/13-×)=9 4/13
7 5/13 + 4 3/13 - x = 9 4/13
11 8/13 - x = 9 4/13
x = 11 8/13 - 9 4/13
x = 2 4/13
Пошаговое объяснение:
7 5/13+(4 3/13-×)=9 4/13
7 5/13 + 4 3/13 - x = 9 4/13
11 8/13 - x = 9 4/13
x = 11 8/13 - 9 4/13
x = 2 4/13