Respuesta :

osikbro

Answer:

x=10, y=-3

Step-by-step explanation:

3x+y=27

-3x+4y=-42

Add the two equations together:

5y=-15

Divide both sides by 5:

y=-3

Plug this back into one of the original equations to solve for x:

3x-3=27

3x=30

x=10

Hope this helps!