Question 432900


{{{0.4x+8<=1.2x-9 }}}     

{{{0.4x-1.2x<=-9-8 }}} 

{{{-0.8x<=-17 }}} .......multiply both sides by -1

{{{0.8x>=17 }}} 

{{{x>=17/0.8 }}} 

{{{x>=21.25 }}} 

the solution is {x|x>=21.25}