1. 7, 2z >-27 2. -4,5x ≥ 9 3. x+2≥10 4. -4>5-y 5. 3z ≤2z+4 6. -5< 7. ≤7

Ответ:

1. 7.2z > -27

   z > -27 / 7.2

   z > -3.75

2. -4.5x ≥ 9

   x ≤ 9 / -4.5

   x ≤ -2

3. x + 2 ≥ 10

   x ≥ 10 - 2

   x ≥ 8

4. -4 > 5 - y

   y > 5 + 4

   y > 9

5. 3z ≤ 2z + 4

   3z - 2z ≤ 4

   z ≤ 4

6. -5 < \(\frac{z}{3}\)

   -15 < z

   z > -15

7. \(\frac{y}{4}\) ≤ 7

   y ≤ 7 \(\cdot\) 4

   y ≤ 28

Ответ: z > -3.75; x ≤ -2; x ≥ 8; y > 9; z ≤ 4; z > -15; y ≤ 28