jandrew8007
07.10.2019 •
Mathematics
Terence and jennifer went to ai's discount music store. terrence bought 12 cd's and two 15-packs of blank cd's. jennifer bought 8 dvds, 3 cds, and one 15-pack of blank cds. together, how much did they spend?
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Ответ:
[1]+[-2]=[-1]
[-4]+[6]=[2]
[3]+[-2]=[1]
[5]+[4]=[9]
So, this leaves us with the final matrix of
[-1 2]
[1 9]