Question 72908
{{{-4<-3x-13<26}}}
{{{-4+13<-3x+cross(-13+13)<26+13}}}Add 13 to all sides (this cancels the -13)
{{{9/-3<cross(-3/-3)x<39/-3}}}Divide all sides by -3 (remember multiplying or dividing a negative flips the greater and less than signs)
{{{-3>x>-13}}}
{{{-13<x<-3}}}Rearrange in a familiar form. So this is the solution range.
Check:
Pick any number within -13 to -3, let x=-5
{{{-4<-3*(-5)-13<26}}}
{{{-4<15-13<26}}}
{{{-4<2<26}}}It's in range and it works. We could check this further by trying every number but I did one to show that the solution works for that number.