2906712 2906712
  • 24-01-2017
  • Mathematics
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Dan had 78 dollars to spend on 7 books. After buying them he had 15 dollars. How much did each book cost?

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Аноним Аноним
  • 24-01-2017
I think each book cost $9
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M4Mags
M4Mags M4Mags
  • 24-01-2017
78-7x=15
-7x=-63
X=9
Each book costs $9
Answer Link

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