Question

{2x-y=5
5x+2y=8 ????​

Answer 1

Explicación paso a paso:

{2x - y = 5} → (×2) = 4x - 2y = 10

4x - 2y = 10

5x + 2y = 8

9x = 18

x = 18/9

x = 2

→ 2x - y = 5

2(2) - y = 5

4 - y = 5

y = 4 - 5

y = -1