f(x)=4(5)-9

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Solution for f(x)=4(5)-9 equation: 


Simplifying
f(x) = 4(5) + -9

Multiply f * x
fx = 4(5) + -9

Multiply 4 * 5
fx = 20 + -9

Combine like terms: 20 + -9 = 11
fx = 11

Solving
fx = 11

Solving for variable 'f'.

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

Divide each side by 'x'.
f = 11x-1

Simplifying
f = 11x-1

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