-2x + 9y = 56 -

9x - 9y = 0

------

7x = 56

x = 56 / 7

x = 8

-2x + 9y = 56 ------ (1)

applying the value of x in equation (1)

-2(8) + 9y = 56

-16 + 9y = 56

9y = 56 + 16

y = 72/9

y = 8

x = 8 ; y = 8

9x - 9y = 0

------

7x = 56

x = 56 / 7

x = 8

-2x + 9y = 56 ------ (1)

applying the value of x in equation (1)

-2(8) + 9y = 56

-16 + 9y = 56

9y = 56 + 16

y = 72/9

y = 8

x = 8 ; y = 8