Answer
$z=9$
Work Step by Step
$3(3z+5)-7=89$
$3(3z+5)=89+7$
$3(3z+5)=96$
$9z+15=96$
$9z=96-15$
$9z=81$
$\frac{9z}{9}=\frac{81}{9}$
$z=9$
Check the answer.
3(3(9)+5)-7=89
3(27+5)-7=89
3(32)-7=89
96-7=89
89=89
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