2f-4=20

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Solution for 2f-4=20 equation: 


Simplifying
2f + -4 = 20

Reorder the terms:
-4 + 2f = 20

Solving
-4 + 2f = 20

Solving for variable 'f'.

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

Add '4' to each side of the equation.
-4 + 4 + 2f = 20 + 4

Combine like terms: -4 + 4 = 0
0 + 2f = 20 + 4
2f = 20 + 4

Combine like terms: 20 + 4 = 24
2f = 24

Divide each side by '2'.
f = 12

Simplifying
f = 12

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