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eric271828
03.08.2019 •
Mathematics
!show a school bought 30 identical desks on sale. the original price, p, of each desk was reduced by $17. altogether the school paid $2010 for the desks. what linear equation models this situation? what was the original price of the desk?
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Ответ:
30(p - 17) = 2010
30p - 510 = 2010
30p = 2010 + 510 (transferred -510 to the right side of the equation)
30p/30 = 2520/30 (divided both sides by 30)
p = 84
2.) Substitute the values to check
30(84 - 17) = 2010
30(67) = 2010
Therefore, the linear equation is 30(p - 17) = 2010;
Therefore, the original price of each desk is $84.
Ответ:
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