[" 1."x-3y=3],[" 3"x-9y=2]

" (c) " [3x-y=3],[9x-3y=9]

x-3y-3=0 ; 3x-9y-2=0

{:(x - 3y = 3),(3x - 9y = 2):}

Solve:- 2x+3y=9 3x-y=1

Solve:- 2x+3y=9 3x-y=1

Find x and y : 2x+3y=9, 3x-y=1

" (3) "2x-3y=9;2x+y=13

2x+3y=5 6x+9y=10

The value of |[2x_1y_1, x_1y_2+x_2y_1, x_1y_3+x_3y_1], [x_1y_2+x_2y_1, 2x_2y_2, x_2y_3+x_3y_2], [x_1y_3+x_3y_1, x_2y_3+x_3y_2, 2x_3y_3]| is.

The value of |[2x_1y_1, x_1y_2+x_2y_1, x_1y_3+x_3y_1], [x_1y_2+x_2y_1, 2x_2y_2, x_2y_3+x_3y_2], [x_1y_3+x_3y_1, x_2y_3+x_3y_2, 2x_3y_3]| is.