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64+20d=450+20d
We move all terms to the left:
64+20d-(450+20d)=0
We add all the numbers together, and all the variables
20d-(20d+450)+64=0
We get rid of parentheses
20d-20d-450+64=0
We add all the numbers together, and all the variables
-386!=0
There is no solution for this equation
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