f(x)=4(-4)-5

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Solution for f(x)=4(-4)-5 equation: 


Simplifying
f(x) = 4(-4) + -5

Multiply f * x
fx = 4(-4) + -5

Multiply 4 * -4
fx = -16 + -5

Combine like terms: -16 + -5 = -21
fx = -21

Solving
fx = -21

Solving for variable 'f'.

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

Divide each side by 'x'.
f = -21x-1

Simplifying
f = -21x-1

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