Question

the product of negative seven and a number is sixty-three.

Explanation:

Step1: Define the unknown number

Let the unknown number be $x$.

Step2: Translate to equation

Product means multiplication, so:
$-7x = 63$

Step3: Solve for $x$

Divide both sides by $-7$:
$x = \frac{63}{-7}$

Answer:

$x = -9$