Question

Resolva as seguintes inequações.
a) 2x + 1 x + 6

b) 2(x + 3) > 3 (1 - x)

c) 6x + 3 < 3x + 18

d) 8(x + 3) > 6 (1 – x)

Answer 1

Resposta:

A - 2x+1<x+6

2x-x<6-1

x<5

B- 2(x+3)>3(1-x)

2x+6>3-3x

2x+3x>3-6  

5x>-3

X>-3/5

C-  6x+3 < 3x + 18

6x-3x <18-3

3x<15

x<5

D- .....

Answer 2

Resposta:

a)2x + 1x +6

3x +6 3

(x + 2)

b) 2 (x + 3) -3 (1-x)

2x + 6> 3-3x

2x + 3x> 3- 6

5x> -3

X>3/5

c) 6x + 3 <3x + 18

6x-3x <18-3

3x <15

x <5

d) 8 (x + 3) -6 (1-x)

8x + 24> 6-6x

8x + 6x> 6- 24

14x> -18

X> - 18/14

X> - 9/7