4-9f=-4-9f

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


Simplifying
4 + -9f = -4 + -9f

Add '9f' to each side of the equation.
4 + -9f + 9f = -4 + -9f + 9f

Combine like terms: -9f + 9f = 0
4 + 0 = -4 + -9f + 9f
4 = -4 + -9f + 9f

Combine like terms: -9f + 9f = 0
4 = -4 + 0
4 = -4

Solving
4 = -4

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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