How to get answer:
[tex]\mathrm{Expand}\:\frac{3}{4}\left(3x+6\right):\quad \frac{9x}{4}+\frac{9}{2}\\=\frac{9x}{4}+\frac{9}{2}-\frac{1}{4}\left(5x-24\right)\\\mathrm{Expand}\:-\frac{1}{4}\left(5x-24\right):\quad -\frac{5x}{4}+6\\=\frac{9x}{4}+\frac{9}{2}-\frac{5x}{4}+6\\\mathrm{Simplify}\:\frac{9x}{4}+\frac{9}{2}-\frac{5x}{4}+6:\quad x+\frac{21}{2}\\=x+\frac{21}{2}[/tex]