Your equation would look like this:
x/4 - 9 = 5
That because the quotient signifies that you should divide, and nine less of something means that you are subtraction 9 from something.
To solve this equation, first add nine to each side:
x/4=14
Next, multiply each side by 4
x=56
To check your answer plug 56 into the equation as x-
56/4 -9 =5
14-9=5
5=5
x=56
Your equation is x/4 -9 = 5