Photos 3Х 9 4Х

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3х 9 4х. 3х+5=8х-15. Х2 - 9 дробь 2х - 6. 15х-5х-2х=800. 3х+5=9х-(х-5).
3х+5=8х-15. Х2 - 9 дробь 2х - 6. 15х-5х-2х=800. 3х+5=9х-(х-5).

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