F(-1)=4-9x

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Solution for F(-1)=4-9x equation: 


Simplifying
F(-1) = 4 + -9x

Reorder the terms for easier multiplication:
-1F = 4 + -9x

Solving
-1F = 4 + -9x

Solving for variable 'F'.

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

Divide each side by '-1'.
F = -4 + 9x

Simplifying
F = -4 + 9x

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