f(x)=3(9)-7

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Solution for f(x)=3(9)-7 equation: 


Simplifying
f(x) = 3(9) + -7

Multiply f * x
fx = 3(9) + -7

Multiply 3 * 9
fx = 27 + -7

Combine like terms: 27 + -7 = 20
fx = 20

Solving
fx = 20

Solving for variable 'f'.

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

Divide each side by 'x'.
f = 20x-1

Simplifying
f = 20x-1

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