8+f=20

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Solution for 8+f=20 equation: 


Simplifying
8 + f = 20

Solving
8 + f = 20

Solving for variable 'f'.

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

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

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

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

Simplifying
f = 12

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