Photos 6 4 Х 1 3Х

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6 4 х 1 3х. 2х2-3х-5/2х-5. (5х-4у)+(5х+4у)=. А3х6. Х-4/2+Х/2=5.
2х2-3х-5/2х-5. (5х-4у)+(5х+4у)=. А3х6. Х-4/2+Х/2=5.

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