3(f-9)=-9

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Solution for 3(f-9)=-9 equation: 


Simplifying
3(f + -9) = -9

Reorder the terms:
3(-9 + f) = -9
(-9 * 3 + f * 3) = -9
(-27 + 3f) = -9

Solving
-27 + 3f = -9

Solving for variable 'f'.

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

Add '27' to each side of the equation.
-27 + 27 + 3f = -9 + 27

Combine like terms: -27 + 27 = 0
0 + 3f = -9 + 27
3f = -9 + 27

Combine like terms: -9 + 27 = 18
3f = 18

Divide each side by '3'.
f = 6

Simplifying
f = 6

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