f(-4)=4(-4)-2

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Solution for f(-4)=4(-4)-2 equation: 


Simplifying
f(-4) = 4(-4) + -2

Reorder the terms for easier multiplication:
-4f = 4(-4) + -2

Multiply 4 * -4
-4f = -16 + -2

Combine like terms: -16 + -2 = -18
-4f = -18

Solving
-4f = -18

Solving for variable 'f'.

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

Divide each side by '-4'.
f = 4.5

Simplifying
f = 4.5

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