f(3)=81-7

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Solution for f(3)=81-7 equation: 


Simplifying
f(3) = 81 + -7

Reorder the terms for easier multiplication:
3f = 81 + -7

Combine like terms: 81 + -7 = 74
3f = 74

Solving
3f = 74

Solving for variable 'f'.

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

Divide each side by '3'.
f = 24.66666667

Simplifying
f = 24.66666667

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