-12+9f=42

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Solution for -12+9f=42 equation: 


Simplifying
-12 + 9f = 42

Solving
-12 + 9f = 42

Solving for variable 'f'.

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

Add '12' to each side of the equation.
-12 + 12 + 9f = 42 + 12

Combine like terms: -12 + 12 = 0
0 + 9f = 42 + 12
9f = 42 + 12

Combine like terms: 42 + 12 = 54
9f = 54

Divide each side by '9'.
f = 6

Simplifying
f = 6

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