Question

Срочно!!!!
дам 35 балов ​

Answer 1

Ответ:

1. a) 10x - 8 = 7x - 11

10x - 7x = -11 + 8

3x = -3

x = -1

б)3x - 4(2x - 1) = 3x + 28

-8x + 4 = 28

-8x = 28-4

-8x = 24

x = -3

2. a) 9x - 12 > 5x + 4

9x - 5x > 4 + 12

4x > 16

x > 4

x ∈ {4; +∞}

б) -3 < 2x - 1 ≤ 3

2x - 1 > -3

2x - 1 ≤ 3

x > -1

x ≤ 2

x ∈ {-1; 2]

3.

Пошаговое объяснение: