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1 7. 7-Х=2. (Х+2)(Х-7). -1/7х=2. Х:0,2=5:7 : 3:Х+1=2:5.
7-Х=2. (Х+2)(Х-7). -1/7х=2. Х:0,2=5:7 : 3:Х+1=2:5.

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