Question

2x - 2y = 4
-5x - 2y =-10
inelemination method​

Answer 1

Step-by-step explanation:

2x-2y=4

-5x-2y=-10

+ + +

__________

7x = 14

x= 2

2x-2y=4

if x= 2

then 2(2)-2y=4

4-2y= 4

-2y= 4-4

y=0

x=2,y=0

Answer 2

Answer:

x = 2 and y = 0

Step-by-step explanation:

$2x - 2y = 4 \\ = > 2y - 2x = - 4 \: \: \: \: \: \: \: ....(1) \\ - 5x - 2y = - 10 ....(2) \\ on \: adding \: (1.) \: and(2.) \: we \: get \\ - 7x = - 14 \\ = > \: x = 2$

Put x = 2 in (1.),

=> y = - 2 +2 = 0