Question

5x-y=4 (-1)
2x-y=-5
Preciso da resposta inteira com a conta favor

Answer 1

$7y = 1 \\ y = \frac{1}{7} \\ 5x + \frac{1}{7} = 4 \\ 5x + 1 = 28 \\ 5x = 27 \\ x = \frac{27}{5} \\ x = 5.4$