Photos 3Х 9 4Х

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3х 9 4х. 9х3. 9х-3(9-2х) =10х-6. 10х=9-4(6-2х). -3х+9=0 -4х-7=0.
9х3. 9х-3(9-2х) =10х-6. 10х=9-4(6-2х). -3х+9=0 -4х-7=0.

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