Hey! :)
So first before anything else, let's establish our variable.
Any number = n
Now, let me tell you some definitions you'd need to know for this problem.
Divided by = /
Subtract = -
The result = whatever was previously stated
So we can use n and create the equation:
n/-4 - 7
*Note: Here's another way to write this: [tex]-\frac{n}{4} - 7[/tex]
Please let me know if you have any questions! :)