Вопрос школьника по предмету Алгебра
При каком значении a система уравнений 4x+7y=6
ax-14y= -12 имеет бесконечно много решений?….Срочно
Ответ учителя по предмету Алгебра
{4x+7y=6|*2
{ax-14y=-12
+{8x+14y=12
+{ax-14y=-12
a=-8
+{8x+14y=12
+{-8x-14y=-12
0x=0
любой корень
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