f-(-8)=-9

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Solution for f-(-8)=-9 equation: 


Simplifying
f + -1(-8) = -9

Multiply -1 * -8
f + 8 = -9

Reorder the terms:
8 + f = -9

Solving
8 + f = -9

Solving for variable 'f'.

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

Add '-8' to each side of the equation.
8 + -8 + f = -9 + -8

Combine like terms: 8 + -8 = 0
0 + f = -9 + -8
f = -9 + -8

Combine like terms: -9 + -8 = -17
f = -17

Simplifying
f = -17

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