f(x)=3x-84x+20

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Solution for f(x)=3x-84x+20 equation: 


Simplifying
f(x) = 3x + -84x + 20

Multiply f * x
fx = 3x + -84x + 20

Reorder the terms:
fx = 20 + 3x + -84x

Combine like terms: 3x + -84x = -81x
fx = 20 + -81x

Solving
fx = 20 + -81x

Solving for variable 'f'.

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

Divide each side by 'x'.
f = 20x-1 + -81

Simplifying
f = 20x-1 + -81

Reorder the terms:
f = -81 + 20x-1

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