Assuming [tex]\times=x[/tex] which latex-wise is not true but ok.
We have the inequality that means the solution will be an interval.
[tex]
-6(4-x) \leq -4(x+1) \\
-24+6x \leq -4x-4 \\
10x \leq 20 \\
x \leq 2 \Longrightarrow x\in (-\infty, 2]
[/tex]
Hope this helps.