Question

Juive me following syster
2x - 4y = 12
-2x + y = -9

Answer 1

(x,y)=(4,-1) I hope it helps

Answer 2

x=4,y=-1

Explanation:

2x-4y=12...(1)

-2x+y=-9...(2)

Add (2) from (1)

-3y=3

Make y the subject of the formula by dividing both sides by -3

y=-1

Let's substitute the value of y into (1)

2x-4(-1)=12

2x+4=12

Substrate 4 from both sides

2x=8

Make x the subject of the formula by dividing both sides by 2

x=4

Therefore x is 4,y is-1