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

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


Simplifying
f(x) = 4(-1x) + 5

Multiply f * x
fx = 4(-1x) + 5

Remove parenthesis around (-1x)
fx = 4 * -1x + 5

Multiply 4 * -1
fx = -4x + 5

Reorder the terms:
fx = 5 + -4x

Solving
fx = 5 + -4x

Solving for variable 'f'.

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

Divide each side by 'x'.
f = 5x-1 + -4

Simplifying
f = 5x-1 + -4

Reorder the terms:
f = -4 + 5x-1

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