Question

{0,4х+2у=5
{-0,9х+3у=10 помогииииииииите пж

Answer 1

{1,2x + 6y = 15
{-1,8x + 6y = 20

{3x = -5
{2y = 5 - 0,4x

{x = -5/3
{2y = 5 + 2/3 = 17/3

{x = -1 2/3
{y= 17/6 = 2 5/6

Ответ: (-1 2/3; 2 5/6)