f(-2)=3-(-2)-9

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Solution for f(-2)=3-(-2)-9 equation: 


Simplifying
f(-2) = 3 + -1(-2) + -9

Reorder the terms for easier multiplication:
-2f = 3 + -1(-2) + -9

Multiply -1 * -2
-2f = 3 + 2 + -9

Combine like terms: 3 + 2 = 5
-2f = 5 + -9

Combine like terms: 5 + -9 = -4
-2f = -4

Solving
-2f = -4

Solving for variable 'f'.

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

Divide each side by '-2'.
f = 2

Simplifying
f = 2

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