Question

determine x e y para que se tenha:
(5x-2y 6 1 x+y) = ( 4 6 1 5)

Answer 1

x+y= 5                  (x -5 )

5x-2y=4

-5x-5y=-25              +

5x-2y=4                   =

-7y=-21

y=-21/-7

y=3

x+3=5

x=5-3

x=2