Question

Mă poate ajuta cineva?​

Answer 1

a) 7x -5x < 18

2x < 18

x < 9, x apartine (-infinit, 9)

b) 9x -6x >/ -12

3x >/ -12

x >/ -4, x apartine [-4, infinit)

c) 3x-8x </ 10

-5x </ 10

x >/ 2 x apartine [2,infinit)

d) 2x-9x > -21

-7x > -21

x > 3, x apartine (3,inifinit)

e) -3x+x </ -12

-2x </ -12

x </ 6, x apartine (-infinit, 6]

f) 9x -4x > -25

5x > -25

x > -5, x apartine (-5, infinit)