MHB How Do I Correctly Subtract All Black Hands in Part (d)?

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Can someone tell me where I'm going wrong here in part (d)?

Screen Shot 2021-09-25 at 8.01.10 pm.png

Answers from textbook:
Screen Shot 2021-09-25 at 8.01.28 pm.png

My attempt:
IMG_2935.JPG

Apologies for the blurry photo.
 
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Someone just pointed out to me my rather obvious mistake...When I subtract the 65780 "all black" hands, the rest of the hands will also still include the 65780 "all red" hands, so I should subtract those as well.
Funny how these things seem obvious in hindsight.
 

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