-9=f+6

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Solution for -9=f+6 equation:


Simplifying
-9 = f + 6

Reorder the terms:
-9 = 6 + f

Solving
-9 = 6 + f

Solving for variable 'f'.

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

Add '-1f' to each side of the equation.
-9 + -1f = 6 + f + -1f

Combine like terms: f + -1f = 0
-9 + -1f = 6 + 0
-9 + -1f = 6

Add '9' to each side of the equation.
-9 + 9 + -1f = 6 + 9

Combine like terms: -9 + 9 = 0
0 + -1f = 6 + 9
-1f = 6 + 9

Combine like terms: 6 + 9 = 15
-1f = 15

Divide each side by '-1'.
f = -15

Simplifying
f = -15

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