(f-1)-2f=

Solution for (f-1)-2f= equation:

Simplifying
(f + -1) + -2f = 0

Reorder the terms:
(-1 + f) + -2f = 0

Remove parenthesis around (-1 + f)
-1 + f + -2f = 0

Combine like terms: f + -2f = -1f
-1 + -1f = 0

Solving
-1 + -1f = 0

Solving for variable 'f'.

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

Add '1' to each side of the equation.
-1 + 1 + -1f = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -1f = 0 + 1
-1f = 0 + 1

Combine like terms: 0 + 1 = 1
-1f = 1

Divide each side by '-1'.
f = -1

Simplifying
f = -1