[tex]\displaystyle\bf\\ + \left \{ {{4x + 3y = - 36} \atop { - 4x + 7y = 6 }} \right. \\ \\ 4x - 4x + 3y + 7y = - 36 + 6 \\ 10y = - 30[/tex]
Ответ: в)
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[tex]\displaystyle\bf\\ + \left \{ {{4x + 3y = - 36} \atop { - 4x + 7y = 6 }} \right. \\ \\ 4x - 4x + 3y + 7y = - 36 + 6 \\ 10y = - 30[/tex]
Ответ: в)