Answer
$z=-3$
Work Step by Step
$3z=-2z-15$
First add 2z to both sides.
$3z+2z=-15$
$5z=-15$
Then divide both sides by 5.
5z$\div$5=-15$\div$5
$z=-3$
Check the answer.
3(-3)=-2(-3)-15
-9=6-15
-9=-9
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