Question

1)

2)
6,5 x +8,1y-4,89=0,
-14x-23 y-27=0​

Answer 1

Пошаговое объяснение:

$6.5x + 8.1y - 4.89 = 0 \\ 6.5x + 8.1y = 4.89 \\ 650x + 810y = 489 \\ - - - - - - - - - - \\ - 14x - 23y - 27 = 0 \\ - 14x - 23y = 27 \\ 14x + 23y = - 27$