4(f-4)=20

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Solution for 4(f-4)=20 equation: 


Simplifying
4(f + -4) = 20

Reorder the terms:
4(-4 + f) = 20
(-4 * 4 + f * 4) = 20
(-16 + 4f) = 20

Solving
-16 + 4f = 20

Solving for variable 'f'.

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

Add '16' to each side of the equation.
-16 + 16 + 4f = 20 + 16

Combine like terms: -16 + 16 = 0
0 + 4f = 20 + 16
4f = 20 + 16

Combine like terms: 20 + 16 = 36
4f = 36

Divide each side by '4'.
f = 9

Simplifying
f = 9

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