f+(-9)=-15

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Solution for f+(-9)=-15 equation: 


Simplifying
f + (-9) = -15
f + -9 = -15

Reorder the terms:
-9 + f = -15

Solving
-9 + f = -15

Solving for variable 'f'.

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

Add '9' to each side of the equation.
-9 + 9 + f = -15 + 9

Combine like terms: -9 + 9 = 0
0 + f = -15 + 9
f = -15 + 9

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

Simplifying
f = -6

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