f(4)=8-1

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Solution for f(4)=8-1 equation: 


Simplifying
f(4) = 8 + -1

Reorder the terms for easier multiplication:
4f = 8 + -1

Combine like terms: 8 + -1 = 7
4f = 7

Solving
4f = 7

Solving for variable 'f'.

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

Divide each side by '4'.
f = 1.75

Simplifying
f = 1.75

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