f(3)=4(5)-9

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Solution for f(3)=4(5)-9 equation: 


Simplifying
f(3) = 4(5) + -9

Reorder the terms for easier multiplication:
3f = 4(5) + -9

Multiply 4 * 5
3f = 20 + -9

Combine like terms: 20 + -9 = 11
3f = 11

Solving
3f = 11

Solving for variable 'f'.

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

Divide each side by '3'.
f = 3.666666667

Simplifying
f = 3.666666667

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