Bài `2:`

`a)3-0,2x<13`

`⇔-0,2x<10`

`⇔x> -50`

`b)1/2+x/3≥1/4`

`⇔x/3≥-1/2`

`⇔x≥-3/2`

`c)3<(2x-2)/8`

`⇔2x-2>24`

`⇔2x>26`

`⇔x>13`

`d)(2x-3)/3≤(3x-2)/4`

`⇔4(2x-3)≤3(3x-2)`

`⇔8x-12≤9x-6`

`⇔x≥-6`