-2f-3=f-12

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Solution for -2f-3=f-12 equation: 



-2f-3=f-12

We move all terms to the left:

-2f-3-(f-12)=0

We get rid of parentheses

-2f-f+12-3=0

We add all the numbers together, and all the variables

-3f+9=0

We move all terms containing f to the left, all other terms to the right

-3f=-9

f=-9/-3

f=+3

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