Question

3x minus y egal 1 x minus 2y egal minus 8 rezolvare metoda substituției​

Answer 1

3x-y=1x-2y=-8

3x-y= -8

1x-2y= -8

3x-y= -8

x-2y = -8

3x-y= -8

-3x+6y= 24

5y=16

y= 16/5

x-2•16/5= -8

x= -8/5

(x,y) = (-8/5 ; 16/5)