ответ на фото помогло??
1)
[tex]x = y + 1 \\ 3x - 2y = 5 \\ \\ 3(y + 1) - 2y = 5 \\ 3y + 3 - 2y = 5 \\ y = 5 - 3 \\ y = 2 \\ \\ x = 2 + 1 = 3[/tex]
Ответ: (3 ; 2,)
2)
[tex]y = 2x - 1 \\ 4x - 3y = - 3 \\ \\ 4x - 3(2x - 1) = - 3 \\ 4x - 6x + 3 = - 3 \\ - 2x = - 3 - 3 \\ 2x = 6 \\ x = 6 \div 2 \\ x = 3 \\ \\ y = 2 \times 3 - 1 = 6 - 1 = 5[/tex]
Ответ: ( 3 ; 5 )
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ответ на фото помогло??
1)
[tex]x = y + 1 \\ 3x - 2y = 5 \\ \\ 3(y + 1) - 2y = 5 \\ 3y + 3 - 2y = 5 \\ y = 5 - 3 \\ y = 2 \\ \\ x = 2 + 1 = 3[/tex]
Ответ: (3 ; 2,)
2)
[tex]y = 2x - 1 \\ 4x - 3y = - 3 \\ \\ 4x - 3(2x - 1) = - 3 \\ 4x - 6x + 3 = - 3 \\ - 2x = - 3 - 3 \\ 2x = 6 \\ x = 6 \div 2 \\ x = 3 \\ \\ y = 2 \times 3 - 1 = 6 - 1 = 5[/tex]
Ответ: ( 3 ; 5 )