-2f=-f+9

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Solution for -2f=-f+9 equation: 


Simplifying
-2f = -1f + 9

Reorder the terms:
-2f = 9 + -1f

Solving
-2f = 9 + -1f

Solving for variable 'f'.

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

Add 'f' to each side of the equation.
-2f + f = 9 + -1f + f

Combine like terms: -2f + f = -1f
-1f = 9 + -1f + f

Combine like terms: -1f + f = 0
-1f = 9 + 0
-1f = 9

Divide each side by '-1'.
f = -9

Simplifying
f = -9

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