Answer
$x=-11$
Work Step by Step
$9x-2=7x-24\ \longrightarrow$ addition property
$9x-2+2-7x=7x-24+2-7x\ \longrightarrow$ addition property
$2x=-22\ \longrightarrow$ multiplication property
$2x\div2=-22\div2\ \longrightarrow$ multiply
$x=-11$