Question

{3x+2y=1450
{2x+900y=4
Пожалуста, срочно помогите!!!​

Answer 1

Ответ:

(484 16/337; -1 24/337)

Объяснение:

{3x+2y=1450 |*2

{2x+900y=4. |*3

{6x+4y=2900

-

{6x+2700y=12.

____________

6х-6х+4у-2700у=2900-12

-2696у = 2888

у = 2888/(-2696) = 361 / (-337)

у = -1 24/337

3х + 2у = 1450 →

3х + 2*(-361/337) = 1450

3х - 722/337 = 1450

3х = 1450 + 722/337

х = 1450/3 + (722/337)/3 =

= 483 + 1/3 + 722/(337*3) =

= 483 + (1*337 + 722)/(337*3) =

= 483 + 1059/(337*3) = 483 + 353/337 =

= 484 16/337