-2f-2f=-4f

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Solution for -2f-2f=-4f equation: 


Simplifying
-2f + -2f = -4f

Combine like terms: -2f + -2f = -4f
-4f = -4f

Add '4f' to each side of the equation.
-4f + 4f = -4f + 4f

Combine like terms: -4f + 4f = 0
0 = -4f + 4f

Combine like terms: -4f + 4f = 0
0 = 0

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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