Verified answer

bonjour

x - 2 y = 4

2 x + 3 y = - 6

x = 4 + 2 y

2 ( 4 + 2 y)  + 3 y = - 6

8 + 4 y + 3 y = - 6

7 y = - 6 - 8

7 y = - 14

y = - 2

x - 2 y = 4

x - 2 ( - 2 ) = 4

x  + 4 = 4

x = 4 - 4  = 0

x = 0

( 0 ; - 2 )