Question

Пожалуйста help me срочняяк

Answer 1

2.
1) х + 23 = 18
х = 18-23
х= -5
2) -31 - х = -9
х = 9-31
х = -22

3.
1) -42 + 54 + (-13) + (-26) + 32 =
= 54 + 32 - 42 - 13 - 26 =
= 86 - 81 = 5
3) 4 + (-3) - (-2) = 4 - 3 + 2 = 3
2) 8 + (-13) - (-11) - (-7) - 42 =
= 8 - 13 + 11 + 7 - 42 = 8 + 11 + 7 - 13 - 42 =
= 26 - 55 = -29