20d-9+2d=19+20d

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Solution for 20d-9+2d=19+20d equation:



20d-9+2d=19+20d
We move all terms to the left:
20d-9+2d-(19+20d)=0
We add all the numbers together, and all the variables
20d+2d-(20d+19)-9=0
We add all the numbers together, and all the variables
22d-(20d+19)-9=0
We get rid of parentheses
22d-20d-19-9=0
We add all the numbers together, and all the variables
2d-28=0
We move all terms containing d to the left, all other terms to the right
2d=28
d=28/2
d=14

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