Ответ:
[tex]x {}^{2} + xy - 3y = - 1 \\ 4x - y = 3 \\ x {}^{2} + xy - 3y = - 1 \\ x = 1 \\ x = 2 \\ y =1 \\ y = 5 [/tex]
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Ответ:
[tex]x {}^{2} + xy - 3y = - 1 \\ 4x - y = 3 \\ x {}^{2} + xy - 3y = - 1 \\ x = 1 \\ x = 2 \\ y =1 \\ y = 5 [/tex]