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Cassandra wants to solve the equation 3z=15 for z in a single step.

What number should Cassandra divide both sides of this equation by?

1 answer

To solve the equation \(3z = 15\) for \(z\) in a single step, Cassandra should divide both sides of the equation by \(3\).

So, dividing both sides by \(3\):

\[ \frac{3z}{3} = \frac{15}{3} \]

This simplifies to:

\[ z = 5 \]

Therefore, Cassandra should divide both sides of the equation by \(3\).

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