Question

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Answer 1

Răspuns:

Explicație pas cu pas:

1) -1 <= (2x-3)/4 < 0

-4 <= 2x -3 < 0,  -1 <= 2x < 5, -1/2 <= x < 3/2

2) 2<= (4x -1)/5 < 3

10 <= 4x -1 < 15, 11 <= 4x < 16,  11/4 <= x < 4

3) -5 <= (2x -5)/3 < -4

-15 <= 2x -5 < -12,  -10 <= 2x < -7,  -5 <= x < -7/2

4) 3 <= (3x +1)/7 < 4,  etc.

5) 2 <= (2x -3)/8 < 3, etc.