Odpowiedź :
2x-8x-4<=3x+12
-6x-4<+3x+12
-6x-3x<=12+4
-9x<=16
!odwracamy znak!
x=>[tex]-\frac{16}{9}[/tex]
Odpowiedź:
[tex]2x-4(2x+1)\leq 3x+12\\\\2x-8x-4\leq 3x+12\\\\-6x-4\leq 3x+12\\\\-6x-3x\leq 12+4\\\\-9x\leq 16\ \ /:(-9)\\\\x\geq -\frac{16}{9}\\\\x\geq -1\frac{7}{9}\\\\x\in\langle-1\frac{7}{9},+\infty)[/tex]