f(5)=9-2x

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Solution for f(5)=9-2x equation: 


Simplifying
f(5) = 9 + -2x

Reorder the terms for easier multiplication:
5f = 9 + -2x

Solving
5f = 9 + -2x

Solving for variable 'f'.

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

Divide each side by '5'.
f = 1.8 + -0.4x

Simplifying
f = 1.8 + -0.4x

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