Question

Ребят, решите, пожалуйста
75 баллов​

Answer 1

.

$5y + 8(x - 3y) = 7x - 12$

$5y + 8x - 24y = 7x - 12 \ (5y - 24y) + (8x - 7x) = - 12 \ - 19y + 1x = - 12$

.

$9x + 3(x - 9y) = 11y + 46$

$9x + 3x - 27y = 11y + 46 \ (9x + 3x) + ( - 27y - 11y) = 46 \ 12x - 38y = 46$

Answer 2

$5y + 8(x - 3y) = 7x - 12 \ 9x + 3(x - 9y) = 11y + 46 \ \5y + 8x - 24y = 7x - 12 \ 9x + 3x - 27y = 11y + 46 \ \ x - 19y = - 12 \ 12x - 38y = 46 \ \ - 2x + 38y = 24 \ 12x - 38y = 46 \ \ 10x = 70 \ x = 7 \ \ - 19y = - 12-x \ - 19y=-19 \ y=1$

Ответ: (7;1)