Question

Ajudaaaaaa
(obs: método do corte)

Answer 1

$3x - 6y = 18 \\ 2x + y = 10 \\ \\ 3x - 6y = 18 \\ 2x + y = 10 \: (6) \\ \\ 3x - 6y = 18 \\ 12x + 6y = 60 \\ \\ 15x = 78 \\ x = \frac{78}{15 } \\ x = 5.2 \\ \\ 2x + y = 10 \\ 2 \times 5.2 + y = 10 \\ 10.4 + y = 10 \\ y = 10 - 10.4 \\ y = - 0.4$