9(11-f)=3(3f-9)

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Solution for 9(11-f)=3(3f-9) equation:


Simplifying
9(11 + -1f) = 3(3f + -9)
(11 * 9 + -1f * 9) = 3(3f + -9)
(99 + -9f) = 3(3f + -9)

Reorder the terms:
99 + -9f = 3(-9 + 3f)
99 + -9f = (-9 * 3 + 3f * 3)
99 + -9f = (-27 + 9f)

Solving
99 + -9f = -27 + 9f

Solving for variable 'f'.

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

Add '-9f' to each side of the equation.
99 + -9f + -9f = -27 + 9f + -9f

Combine like terms: -9f + -9f = -18f
99 + -18f = -27 + 9f + -9f

Combine like terms: 9f + -9f = 0
99 + -18f = -27 + 0
99 + -18f = -27

Add '-99' to each side of the equation.
99 + -99 + -18f = -27 + -99

Combine like terms: 99 + -99 = 0
0 + -18f = -27 + -99
-18f = -27 + -99

Combine like terms: -27 + -99 = -126
-18f = -126

Divide each side by '-18'.
f = 7

Simplifying
f = 7

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