20-4f=8

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Solution for 20-4f=8 equation: 


Simplifying
20 + -4f = 8

Solving
20 + -4f = 8

Solving for variable 'f'.

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

Add '-20' to each side of the equation.
20 + -20 + -4f = 8 + -20

Combine like terms: 20 + -20 = 0
0 + -4f = 8 + -20
-4f = 8 + -20

Combine like terms: 8 + -20 = -12
-4f = -12

Divide each side by '-4'.
f = 3

Simplifying
f = 3

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