f(-x)=8x-3

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Solution for f(-x)=8x-3 equation: 


Simplifying
f(-1x) = 8x + -3

Remove parenthesis around (-1x)
f * -1x = 8x + -3

Reorder the terms for easier multiplication:
-1f * x = 8x + -3

Multiply f * x
-1fx = 8x + -3

Reorder the terms:
-1fx = -3 + 8x

Solving
-1fx = -3 + 8x

Solving for variable 'f'.

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

Divide each side by '-1x'.
f = 3x-1 + -8

Simplifying
f = 3x-1 + -8

Reorder the terms:
f = -8 + 3x-1

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