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dagruzd
@dagruzd
July 2022
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Решите систему уравнений
4k+3y=70
2x+1y=28
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rubilovalex
Y=28-2x.подставляем в 1 уравнение: 4x+3*(28-2x)=70; 4x+84-6x=70; 4x-6x=70-84; -2x= -14; x=(-14)/(-2)=7. y=28-2*7=28-1=14. Ответ:(7:14).
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