-f(x)=x+4

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


Simplifying
-1f(x) = x + 4

Multiply f * x
-1fx = x + 4

Reorder the terms:
-1fx = 4 + x

Solving
-1fx = 4 + x

Solving for variable 'f'.

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

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

Simplifying
f = -4x-1 + -1

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

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