Images 3 5 7 Х

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3 5 7 х. 3х2,5. 2х-1-3*(1-3х)+5х=2*(2-х)+1. 5(Х-7)=-3. 3(2х-5)-х<5(х+1).
3х2,5. 2х-1-3*(1-3х)+5х=2*(2-х)+1. 5(Х-7)=-3. 3(2х-5)-х<5(х+1).

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