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1.20 x. 20-3(Х-5)<16-7х. 5/4-Х+5/Х=10/5. Решение 5х+12=60. 4нвк 60-12-19.
20-3(Х-5)<16-7х. 5/4-Х+5/Х=10/5. Решение 5х+12=60. 4нвк 60-12-19.

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