Question

Система 5х-3у=8,
15х-9у=8;

Answer 1

5x - 3y = 8   /*(-3)
15x - 9y = 8 

- 15x + 9y = - 24
15x - 9y = 8 

- 15x + 15x + 9y - 9y = - 24 + 8
0 = - 16

Нет решений