20=2-3f

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Solution for 20=2-3f equation:


Simplifying
20 = 2 + -3f

Solving
20 = 2 + -3f

Solving for variable 'f'.

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

Add '3f' to each side of the equation.
20 + 3f = 2 + -3f + 3f

Combine like terms: -3f + 3f = 0
20 + 3f = 2 + 0
20 + 3f = 2

Add '-20' to each side of the equation.
20 + -20 + 3f = 2 + -20

Combine like terms: 20 + -20 = 0
0 + 3f = 2 + -20
3f = 2 + -20

Combine like terms: 2 + -20 = -18
3f = -18

Divide each side by '3'.
f = -6

Simplifying
f = -6

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