9=3f-20.7

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Solution for 9=3f-20.7 equation: 


Simplifying
9 = 3f + -20.7

Reorder the terms:
9 = -20.7 + 3f

Solving
9 = -20.7 + 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.
9 + -3f = -20.7 + 3f + -3f

Combine like terms: 3f + -3f = 0
9 + -3f = -20.7 + 0
9 + -3f = -20.7

Add '-9' to each side of the equation.
9 + -9 + -3f = -20.7 + -9

Combine like terms: 9 + -9 = 0
0 + -3f = -20.7 + -9
-3f = -20.7 + -9

Combine like terms: -20.7 + -9 = -29.7
-3f = -29.7

Divide each side by '-3'.
f = 9.9

Simplifying
f = 9.9

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