F(-3)=2x-3-8

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Solution for F(-3)=2x-3-8 equation: 


Simplifying
F(-3) = 2x + -3 + -8

Reorder the terms for easier multiplication:
-3F = 2x + -3 + -8

Reorder the terms:
-3F = -3 + -8 + 2x

Combine like terms: -3 + -8 = -11
-3F = -11 + 2x

Solving
-3F = -11 + 2x

Solving for variable 'F'.

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

Divide each side by '-3'.
F = 3.666666667 + -0.6666666667x

Simplifying
F = 3.666666667 + -0.6666666667x

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