f(x)=x+(x-1)

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Solution for f(x)=x+(x-1) equation: 


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

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

Reorder the terms:
fx = x + (-1 + x)

Remove parenthesis around (-1 + x)
fx = x + -1 + x

Reorder the terms:
fx = -1 + x + x

Combine like terms: x + x = 2x
fx = -1 + 2x

Solving
fx = -1 + 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 = -1x-1 + 2

Simplifying
f = -1x-1 + 2

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

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