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Werty5678
@Werty5678
August 2022
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ПОМОГИТЕ ПОЖАЛУЙСТА!!! 28 (Б) И 29(Б). СРОЧНО!!!!
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irinaorlova2
3а+4в+55 4х-3у=12
7а-в=56 4\3х-у=4
в=7а-56 у=4\3х-4
3а+4(7а-56)=55 4х-3*(4\3х-4)=12
3а+28а-224=55 4х-4х+12=12
31а=55+224 х=0
31а=279 у=4\3*0-4=-4
а=279:31
а=9
7*9-в=56
63-в=56
в=63-56
в=13
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Answers & Comments
7а-в=56 4\3х-у=4
в=7а-56 у=4\3х-4
3а+4(7а-56)=55 4х-3*(4\3х-4)=12
3а+28а-224=55 4х-4х+12=12
31а=55+224 х=0
31а=279 у=4\3*0-4=-4
а=279:31
а=9
7*9-в=56
63-в=56
в=63-56
в=13