5-(-f)=12

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Solution for 5-(-f)=12 equation: 


Simplifying
5 + -1(-1f) = 12

Remove parenthesis around (-1f)
5 + -1 * -1f = 12

Multiply -1 * -1
5 + 1f = 12

Solving
5 + 1f = 12

Solving for variable 'f'.

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

Add '-5' to each side of the equation.
5 + -5 + 1f = 12 + -5

Combine like terms: 5 + -5 = 0
0 + 1f = 12 + -5
1f = 12 + -5

Combine like terms: 12 + -5 = 7
1f = 7

Divide each side by '1'.
f = 7

Simplifying
f = 7

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