-23=-9f-4f

Solution for -23=-9f-4f equation:

Simplifying
-23 = -9f + -4f

Combine like terms: -9f + -4f = -13f
-23 = -13f

Solving
-23 = -13f

Solving for variable 'f'.

Move all terms containing f to the left, all other terms to the right.

Add '13f' to each side of the equation.
-23 + 13f = -13f + 13f

Combine like terms: -13f + 13f = 0
-23 + 13f = 0

Add '23' to each side of the equation.
-23 + 23 + 13f = 0 + 23

Combine like terms: -23 + 23 = 0
0 + 13f = 0 + 23
13f = 0 + 23

Combine like terms: 0 + 23 = 23
13f = 23

Divide each side by '13'.
f = 1.769230769

Simplifying
f = 1.769230769