9x - 2(-1 - x) = x - 59x + 2 + 2x = x - 511x + 2 = x - 511x - x = -5 - 210x = -7x = -7/10
Ответ: x = -7/10
9x - 2(-1 - x) = x - 5
9x + 2 + 2x = x - 5
11x + 2 = x - 5
11x - x = -5 - 2
10x = -7
x = -7/10
Ответ: x = -7/10