f(0.2)=0.8

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Solution for f(0.2)=0.8 equation: 


Simplifying
f(0.2) = 0.8

Reorder the terms for easier multiplication:
0.2f = 0.8

Solving
0.2f = 0.8

Solving for variable 'f'.

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

Divide each side by '0.2'.
f = 4

Simplifying
f = 4

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