9+F=12

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Solution for 9+F=12 equation: 


Simplifying
9 + F = 12

Solving
9 + F = 12

Solving for variable 'F'.

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

Add '-9' to each side of the equation.
9 + -9 + F = 12 + -9

Combine like terms: 9 + -9 = 0
0 + F = 12 + -9
F = 12 + -9

Combine like terms: 12 + -9 = 3
F = 3

Simplifying
F = 3

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