f(2.5)=-2(2.5)+80

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Solution for f(2.5)=-2(2.5)+80 equation: 


Simplifying
f(2.5) = -2(2.5) + 80

Reorder the terms for easier multiplication:
2.5f = -2(2.5) + 80

Multiply -2 * 2.5
2.5f = -5 + 80

Combine like terms: -5 + 80 = 75
2.5f = 75

Solving
2.5f = 75

Solving for variable 'f'.

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

Divide each side by '2.5'.
f = 30

Simplifying
f = 30

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