Question

2x + 3y=9 : 2x + y = 13​

Answer 1

Answer:

x = 15/2  ,  y = -2

Step-by-step explanation:

2x + 3y = 9            - ( 1 )

2x + y = 13             - ( 2 )

( 1 ) - ( 2 ) => 2x + 3y - ( 2x + y ) = 9 - 13

=> 2y = -4

=> y = -2

Substituting in ( 2 ), 2x + y = 13

=> 2x - 2 = 13

=> 2x = 15

=> x = 15/2

Answer 2

2x + 3y = 9            - ( 1 )

2x + y = 13             - ( 2 )

From eq. ( 1 ) - ( 2 )

=> 2x + 3y - ( 2x + y ) = 9 - 13

=> 2y = -4

=> y = -2

Substituting in ( 2 ), 2x + y = 13

=> 2x - 2 = 13

=> 2x = 15

=> x = 15/2