Question

2x+y+6=0, 4x-2y-4=0

Answer 1

Step-by-step explanation:

2x+y+6 made first equation

4x-2y-4 made second equation

multiply the first equation by 2

the we get 4x+2y+12

4x+2y+12

4x-2y-4

gives you 8x+8=0

so x=-8/8

x=-1

Answer 2

Answer:

x = -1, y = -4

Step-by-step explanation:

2(2x+y+6 = 0) ----> 4x+2y+12=0 (eq.1)

4x-2y-4 = 0 (eq.2)

Using elimination method,

4x+2y+12=0

4x-2y-4 = 0

------------------

8x + 8 = 0

8x = -8

x = -1

Substituting x = -1 in eq.2, we get

-4 - 2y = 4

-2y = 8

y = 8/-2 = -8/2 = -4