Решите уровнения а) (-28) - x=-13 б) (-1) - x=24 в) (-x) - 5=8 г) - 36 + (-x) = 0

а) ( - 28) - x = - 13,

- x = - 13 - ( - 28),

- x = - 13 + 28,

- x = 15,

x = - 15.

Проверка: ( - 28) - ( - 15) = - 13,

- 28 + 15 = - 13,

- 13 = - 13,

б) ( - 1) - x = 24,

- x = 24 - ( - 1),

- x = 24 + 1,

- x = 25,

x = - 25.

Проверка: ( - 1) - (-25) = 24,

- 1 + 25 = 24,

24 = 24.

в) ( - x) - 5 = 8,

( - x) = 8 - ( - 5),

- x = 8 + 5,

- x = 13,

x = - 13.

Проверка: ( - ( - 13)) - 5 = 8,

13 - 5 = 8,

8 = 8.

г) - 36 + ( - x) = 0,

( - x) = 0 - ( - 36),

- x = 0 + 36,

- x = 36,

x = - 36.

Проверка: - 36 + ( - ( - 36)) = 0,

- 36 + 36 = 0

0 = 0.