f(x)=x+x+6

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Solution for f(x)=x+x+6 equation: 


Simplifying
f(x) = x + x + 6

Multiply f * x
fx = x + x + 6

Reorder the terms:
fx = 6 + x + x

Combine like terms: x + x = 2x
fx = 6 + 2x

Solving
fx = 6 + 2x

Solving for variable 'f'.

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

Divide each side by 'x'.
f = 6x-1 + 2

Simplifying
f = 6x-1 + 2

Reorder the terms:
f = 2 + 6x-1

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