Răspuns :
a) 4x +12 <3x+7
4x - 3x < 7-12
x < -5, x apartine (-infinit, -5)
b) 8x +16 < 5x+4
8x-5x < 4-16
3x < -12
x < -4, x apartine (-infinit, -4)
c) 6x-18 -10 </ 4x+2
6x -4x </ 2+28
2x </ 30
x </ 15, x apartine (-infinit, 15]
d) 10x+15 -3x-3 > 4x-36
7x +12 > 4x-36
7x -4x > -36-12
3x > -48
x > -16, x apartine (-16, infinit)
e) 8x+4 +2x-44 >/ 6x -24
10x -40 >/ 6x -24
10x - 6x >/ -24+40
4x >/ 16
x >/ 4 , x apartine [4,infinit)
f) 3x-3 - 6 < 2x+14
3x -2x < 14 +9
x < 23, x apartine (-inifnit, 23)
Răspuns:
[tex]f)3 x - 3 - 6 < 2x + 14 \\ x < 23 \\ x \: apartine \: ( - \infty . \: 23)[/tex]