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ksushamicho
@ksushamicho
June 2022
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решить систему методом алгебраического сложения
х+у=7
х-3у=-5
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lenaka2806
1.x+y=7 |*3 4.4+y=7
x-3y=-5 y=3
2.3x+3y=21 5.(4;3)- решение системы
x-3y=-5
3.4x=16 | : 4
x=4
2 votes
Thanks 4
ksushamicho
а такое не поможите 4х-у=3 и х-у=6
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Answers & Comments
x-3y=-5 y=3
2.3x+3y=21 5.(4;3)- решение системы
x-3y=-5
3.4x=16 | : 4
x=4