f(20)=2x-20

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Solution for f(20)=2x-20 equation: 


Simplifying
f(20) = 2x + -20

Reorder the terms for easier multiplication:
20f = 2x + -20

Reorder the terms:
20f = -20 + 2x

Solving
20f = -20 + 2x

Solving for variable 'f'.

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

Divide each side by '20'.
f = -1 + 0.1x

Simplifying
f = -1 + 0.1x

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