0.6(4у-18)-0.4(5-7у)=2.4y-10,8-2+2,8y=5,2y-12,8 при у=2 4/13 =30/13
52/10*30/13-12,8=12-12,8=-0,8
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0.6(4у-18)-0.4(5-7у)=2.4y-10,8-2+2,8y=5,2y-12,8 при у=2 4/13 =30/13
52/10*30/13-12,8=12-12,8=-0,8