7F=72-F

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Solution for 7F=72-F equation: 


Simplifying
7F = 72 + -1F

Solving
7F = 72 + -1F

Solving for variable 'F'.

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

Add 'F' to each side of the equation.
7F + F = 72 + -1F + F

Combine like terms: 7F + F = 8F
8F = 72 + -1F + F

Combine like terms: -1F + F = 0
8F = 72 + 0
8F = 72

Divide each side by '8'.
F = 9

Simplifying
F = 9

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