f(x)=5-7(-x)

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Solution for f(x)=5-7(-x) equation: 


Simplifying
f(x) = 5 + -7(-1x)

Multiply f * x
fx = 5 + -7(-1x)

Remove parenthesis around (-1x)
fx = 5 + -7 * -1x

Multiply -7 * -1
fx = 5 + 7x

Solving
fx = 5 + 7x

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 + 7

Simplifying
f = 5x-1 + 7

Reorder the terms:
f = 7 + 5x-1

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