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7х 4х. 4х+7=0. 3(7х-4)-4(6х+5)=х. Решение линейных уравнений -х-2+3(х-3)=3(4-х)-3. 5(4х-3)+5(4-4х)>=0.
4х+7=0. 3(7х-4)-4(6х+5)=х. Решение линейных уравнений -х-2+3(х-3)=3(4-х)-3. 5(4х-3)+5(4-4х)>=0.

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