f(x)=4x+9x-1

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Solution for f(x)=4x+9x-1 equation: 


Simplifying
f(x) = 4x + 9x + -1

Multiply f * x
fx = 4x + 9x + -1

Reorder the terms:
fx = -1 + 4x + 9x

Combine like terms: 4x + 9x = 13x
fx = -1 + 13x

Solving
fx = -1 + 13x

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 + 13

Simplifying
f = -1x-1 + 13

Reorder the terms:
f = 13 + -1x-1

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