Well, PEMDAS can come in handy for this.
If you don't know what "PEMDAS" it is ⬇
Parentheses
Equation
Multiplication
Divison
Addition
Subtraction
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Please
Excuse
My
Dear
Aunt
Sally
So, if we're solving for the value of "f" then follow these steps to find what it equal!
-4(f)+25-(5(f)+5=?
? = 0
Change your "symbols" from addition to subtraction and MAYBE the other one to multiplication
25 - 4(f) - 5(f) + 5 = ?
Remember I said the mystery number (?) is 0
Lets try to multipy your numbers by a negative 1 (-1) in this part of the problem ➡-9(f) = 0
We can divide from "9" as well
From the looks of it you have one solution to this problem
So, therefore your would have to be➡ f = 0
