D=(4/5)(x-12)

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Solution for D=(4/5)(x-12) equation: 



=(4/5)(D-12)

We move all terms to the left:

-((4/5)(D-12))=0



Domain of the equation: 5)(D-12))!=0

D∈R



We add all the numbers together, and all the variables

-((+4/5)(D-12))=0

We multiply parentheses ..

-((+4D^2+4/5*-12))=0

We multiply all the terms by the denominator


-((+4D^2+4=0

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