Respuesta:
espero te sirva
Explicación paso a paso:
[tex]3x + 2y = 7 \\ 3x = 7 - 2y \\ x = \frac{7 - 2y}{3} \\ 2x - 3y = 9 \\ 2x = 9 + 3y \\ x = \frac{9 + 3y}{2} \\ \frac{7 - 2y}{3} = \frac{9 - 3y}{2} \\ 14 - 4y = 27 - 9y \\ - 27 + 14 = - 9y + 4y \\ - 13 = 13y \\ 13y = - 13 \\ y = \frac{ - 13}{13} = - 1[/tex]
[tex]2x - 3y = 9 \\ 2x = 9 + 3y \\ x = \frac{9 + 3y}{2} = \frac{9 + 3 \times ( - 1)}{2} = \\ = \frac{9 + ( - 3)}{2} = \\ \frac{9 - 3}{2} = \frac{6}{2} = 3 \\ x = 3[/tex]
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Respuesta:
espero te sirva
Explicación paso a paso:
[tex]3x + 2y = 7 \\ 3x = 7 - 2y \\ x = \frac{7 - 2y}{3} \\ 2x - 3y = 9 \\ 2x = 9 + 3y \\ x = \frac{9 + 3y}{2} \\ \frac{7 - 2y}{3} = \frac{9 - 3y}{2} \\ 14 - 4y = 27 - 9y \\ - 27 + 14 = - 9y + 4y \\ - 13 = 13y \\ 13y = - 13 \\ y = \frac{ - 13}{13} = - 1[/tex]
[tex]2x - 3y = 9 \\ 2x = 9 + 3y \\ x = \frac{9 + 3y}{2} = \frac{9 + 3 \times ( - 1)}{2} = \\ = \frac{9 + ( - 3)}{2} = \\ \frac{9 - 3}{2} = \frac{6}{2} = 3 \\ x = 3[/tex]