resolucao 7

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2 – 3x >= x + 14
-3x – x >= -2 + 14
-4x >= 12
X >= 12 / 4
x>= 3
(5x – 2) – (1 + 2x) <= 3 + 2x
 2 7 14
(35x – 14) – (2 + 4x) <= 42 + 2x
 14 14
35x – 14 – 2 – 4x <= 42 + 2x
 14		 14
- 2x + 35x – 4x <= 42 + 14 + 2
29x <= 58
X<= 58 
 29
X <= 2
2(3x + 12) > 2(x + 5) – 2x + 2
6x + 24 > 2x + 10 – 2x + 2
6x – 2x + 2x > - 24 + 10 +2
6x > - 12
X > - 12
 6
x> -2
6x – 11 < 7
4
6x – 44 < 28
 4	 4
6x < 44 + 28
6x < 72
X < 72
 6
X< 12
2z + 5 < z +10
2z – z < -5 +10
Z < 5
-8n + 3501 > 210 – 5n
-8n +5n > -3501 +210
-3n > 3711
n> 3711
 3
n> 1.237
X² - 2x -3 <=0
2x +- 4x² + 12x² <=0
 2x²
2x +- 4x²<=0
 2x²
2x +-2 <=0
2x<=+-2
X<=2
 2
X<=+2 e x<= -2
3(x² - 10) > 4x² - 34
3x² - 30 > 4x² - 34
3x² - 4x² > 30 – 34
-x² > - 4
X > (raíz) 4
X > 2