12-6f=-42

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Solution for 12-6f=-42 equation:



12-6f=-42
We move all terms to the left:
12-6f-(-42)=0
We add all the numbers together, and all the variables
-6f+54=0
We move all terms containing f to the left, all other terms to the right
-6f=-54
f=-54/-6
f=+9

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