To solve inequalities we proceed as usual as when solving equations, we need to isolate the variable to one of the sides of the inequality.
[tex]\begin{gathered} 16x+8>12x+20 \\ 16x-12x>20-8 \\ 4x>12 \\ x>\frac{12}{4} \\ x>3 \end{gathered}[/tex]The solution of the inequality includes all number that are greater than 3.
[tex](3,\text{ }\infty)[/tex]
