Question

x-(7целых5/9-5целых1/6)=-3,5

Answer 1

- 3,5 = - 3 5/10 = - 3 1/2
----------------------------------
х - ( 7 5/9 - 5 1/6) = - 3,5
х - (7 10/18 - 5 3/18) = - 3 1/2
х - 2 7/18 = - 3 1/2
х = - 3 1/2 + 2 7/18
х = - (3 9/18 - 2 7/18)
х = - 1 2/18
х = - 1 1/9
--------------------------------
Проверка: - 1 1/9 - (7 10/18 - 5 3/18) = - 3 1/2
                  - 1 2/18 - 2 7/18 = - 3 1/2
                  - 3 9/18 = - 3 1/2
                  - 3 1/2 = - 3 1/2