40=2f-4

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Solution for 40=2f-4 equation: 


Simplifying
40 = 2f + -4

Reorder the terms:
40 = -4 + 2f

Solving
40 = -4 + 2f

Solving for variable 'f'.

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

Add '-2f' to each side of the equation.
40 + -2f = -4 + 2f + -2f

Combine like terms: 2f + -2f = 0
40 + -2f = -4 + 0
40 + -2f = -4

Add '-40' to each side of the equation.
40 + -40 + -2f = -4 + -40

Combine like terms: 40 + -40 = 0
0 + -2f = -4 + -40
-2f = -4 + -40

Combine like terms: -4 + -40 = -44
-2f = -44

Divide each side by '-2'.
f = 22

Simplifying
f = 22

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