a: =>3x-1>8
=>3x>9
hay x>3
c: =>1-2x>12
=>-2x>11
hay x<-11/2
a: =>3x-1>8
=>3x>9
hay x>3
c: =>1-2x>12
=>-2x>11
hay x<-11/2
a, \(\dfrac{3x-1-8}{4}>0\Rightarrow3x-9>0\Leftrightarrow x>3\)
c, \(\dfrac{1-2x-12}{3}>0\Rightarrow-2x-11>0\Leftrightarrow x< -\dfrac{11}{2}\)