-15×z=0

To solve the equation, remember the basic step. Everything that has an answer as 0 will almost all the time be 0.

So, change $$z$$ into 0.

$$-15*z=0\Rightarrow-15*0=0$$

Multiply.

$$-15*0=0$$

Compare the answer to the equation's answer.

$$0=0$$

So, this makes the equation true.

So the answer is $$\boxed{z=0}$$.