Question 115219
-6 less than or equal to 1/4(3-x)less than or equal to 12. 
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{{{-6<=1/4(3-x)<=12}}}
{{{-6<=(3/4)-(1/4)x<=12}}}
{{{-6-(3/4)<=-(1/4)x<=12-(3/4)}}}
{{{-(24/4)-(3/4)x<=-(1/4)x<=48/4-(3/4)}}}
{{{-27/4<=(-1/4)x<=45/4}}}
{{{-(27/4)(-4/1)<=x<=45/4(-4/1)}}}
{{{27<=x<=-45}}}
:)