f(4)=-4+9

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Solution for f(4)=-4+9 equation: 


Simplifying
f(4) = -4 + 9

Reorder the terms for easier multiplication:
4f = -4 + 9

Combine like terms: -4 + 9 = 5
4f = 5

Solving
4f = 5

Solving for variable 'f'.

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

Divide each side by '4'.
f = 1.25

Simplifying
f = 1.25

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