#### Answer

$x=8$

#### Work Step by Step

"Times" indicates multiplication. "Added to" indicates addition. The comma tells us to perform the multiplication before the addition.
$3x+9=33$ $\longrightarrow$addition property
$3x+9-9=33-9$ $\longrightarrow$combine like terms
$3x=24$ $\longrightarrow$multiplication property
$3x\div3=24\div3$ $\longrightarrow$divide
$x=8$