Answer
$$\frac{13}{x} - 7x$$
Work Step by Step
To translate this statement into an expression, we need to break down the different parts of the statement:
The "quotient of $13$ and a number" means $13$ is divided by a number, $x$.
"Decreased by $7$ times a number" means to subtract $7$ times that same number, $x$.
Putting all these parts together, we have:
$$\frac{13}{x} - 7x$$
