Răspuns :
Explicație pas cu pas:
[tex] A = (-3; -1; 0; 2; 5; 7)[/tex]
a)
[tex]x + 2 < 5 \\ x < 5 - 2 \\ x < 3 \\ A = (-3; -1; 0; 2)[/tex]
b)
[tex]-x + 3 > 7 \\ - x > 7 - 3 \\ - x > 4 \\ x < -4 \\ A = ()[/tex]
c)
[tex]- 2x \geqslant 6 \\ - x \geqslant 3 \\ x \leqslant - 3 \\ A = (-3)[/tex]
d)
[tex] - 5x + 6 > - 4 \\ - 5x > - 4 - 6 \\ - 5x > - 10 \\ x < 2 \\ A = (-3; -1; 0)[/tex]
e)
[tex]4x+7 \leqslant -2x-5 \\ 4x + 2x \leqslant - 5 - 7 \\ 6x \leqslant - 12 \\ x \leqslant - 2 \\ A = (-3)[/tex]
f)
[tex]- 2x+1 \geqslant -x-7 \\ - 2x + x \geqslant - 7 - 1 \\ - x \geqslant - 8 \\ x \leqslant 8 \\ A = (-3; -1; 0; 2; 5; 7)[/tex]