7f-9=2f+8f+9

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Solution for 7f-9=2f+8f+9 equation:


Simplifying
7f + -9 = 2f + 8f + 9

Reorder the terms:
-9 + 7f = 2f + 8f + 9

Reorder the terms:
-9 + 7f = 9 + 2f + 8f

Combine like terms: 2f + 8f = 10f
-9 + 7f = 9 + 10f

Solving
-9 + 7f = 9 + 10f

Solving for variable 'f'.

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

Add '-10f' to each side of the equation.
-9 + 7f + -10f = 9 + 10f + -10f

Combine like terms: 7f + -10f = -3f
-9 + -3f = 9 + 10f + -10f

Combine like terms: 10f + -10f = 0
-9 + -3f = 9 + 0
-9 + -3f = 9

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

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

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

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

Simplifying
f = -6

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