Розвязати систему _ | 0.6x+0.2y=400 { | 0.4x+0.8y=400
ozilpro228
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01.10.2019 20:50
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6х - 3,6 + 0,8х - 0,32 = 1;
6х + 0,8х = 1 + 0,32 + 3,6;
6,8х = 4,92;
х = 4,92 / 6,8;
х = 0,72;
ответ: 0,72.