Question

срочно!!!15 баллов.математика

Answer 1

1.

- 5 1/3 + (-2) = - 5 1/3 - 2 = - 7 1/3,

2.

(-32) + 7 = - 25,
-5/7 + 2/3 = -15/21 + 14/21 = -1/21,

3.

-7 - (-1 2/5) = -7 + 1 2/5 = -6 5/5 + 1 2/5 = - 5 3/5,

4.

х - (-1) - 3 = -4,
х + 1 - 3 = -4,
х = -4 - 1 + 3,
х = -5 + 3,
х = -2

Answer 2

спасибо))

Answer 3

:))

Answer 4

В первом задании - сумма чисел -2 и -5