f(2)=2(2)+5

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Solution for f(2)=2(2)+5 equation: 


Simplifying
f(2) = 2(2) + 5

Reorder the terms for easier multiplication:
2f = 2(2) + 5

Multiply 2 * 2
2f = 4 + 5

Combine like terms: 4 + 5 = 9
2f = 9

Solving
2f = 9

Solving for variable 'f'.

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

Divide each side by '2'.
f = 4.5

Simplifying
f = 4.5

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