f(40)=-3x+4

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Solution for f(40)=-3x+4 equation: 


Simplifying
f(40) = -3x + 4

Reorder the terms for easier multiplication:
40f = -3x + 4

Reorder the terms:
40f = 4 + -3x

Solving
40f = 4 + -3x

Solving for variable 'f'.

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

Divide each side by '40'.
f = 0.1 + -0.075x

Simplifying
f = 0.1 + -0.075x

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