57-F=-12

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Solution for 57-F=-12 equation: 


Simplifying
57 + -1F = -12

Solving
57 + -1F = -12

Solving for variable 'F'.

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

Add '-57' to each side of the equation.
57 + -57 + -1F = -12 + -57

Combine like terms: 57 + -57 = 0
0 + -1F = -12 + -57
-1F = -12 + -57

Combine like terms: -12 + -57 = -69
-1F = -69

Divide each side by '-1'.
F = 69

Simplifying
F = 69

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