Respuesta :

Answer:

2x - (4x + 3) = 12

Step-by-step explanation:

Given the 2 equations

- 4x + y = 3 → (1)

2x - y = 12 → (2)

Rearrange (1) expressing y in terms of x by adding 4x to both sides

y = 4x + 3

Substitute y = 4x + 3 into (2)

2x - (4x + 3) = 12