2f-5.7=12.3

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Solution for 2f-5.7=12.3 equation: 


Simplifying
2f + -5.7 = 12.3

Reorder the terms:
-5.7 + 2f = 12.3

Solving
-5.7 + 2f = 12.3

Solving for variable 'f'.

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

Add '5.7' to each side of the equation.
-5.7 + 5.7 + 2f = 12.3 + 5.7

Combine like terms: -5.7 + 5.7 = 0.0
0.0 + 2f = 12.3 + 5.7
2f = 12.3 + 5.7

Combine like terms: 12.3 + 5.7 = 18
2f = 18

Divide each side by '2'.
f = 9

Simplifying
f = 9

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