Найдите в каждом ряду уравнения с одинаковыми корнями.
а) 5617 - Х* 60 = 4177 ; Y* 60 = 5620-4120 ; D * 60 = 5600-4160
б)X * 700 - 460 = 289000 ; У *700=288999+461 ; d * 700 = 288 999 + 459
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