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Mathematics 19 Online
OpenStudy (anonymous):

ah

OpenStudy (anonymous):

cd's = c dvd's = d 2c + 6d = 156 --> (-3) 1c + 9d = 210 --> (2) -------------- -6c - 18d = -468 (result of multiplying by -3) 2c + 18d = 420 (result of multiplying by 2) --------------add -4c = -48 c = 12 each cd is $ 12

OpenStudy (anonymous):

any questions ?

OpenStudy (anonymous):

anytime...glad to help :)

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