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sonyromanovao6
@sonyromanovao6
August 2022
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Решить систему уровнения 5х+2у=12 и 4х+у=3
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rubilovalex
Y=3-4x. подставляем в 1 уравнение системы: 5x+2*(3-4x)=12; 5x-8x+6=12; 5x-8x=12-6; -3x=6; x=6/(-3)= -2. y=3-4*(-2)=3+8=11. Ответ: (-2:11).
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valeramag1
5х+2у=12 4х+у=3 |*-2 5х+2у=12 -8х-2у=-6 -3х=6 х=-2 4*-2+у=3 -8+у=3 у=3+8 у=11 Ответ:-2;11
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