Odpowiedź:
a)
[tex]\left \{ {{x-y=-1} \atop {-2x+y=4}} \right.[/tex]
x = 5 , y= 6
b)
[tex]\left \{ {{x+y=4} \atop {x-y=1}} \right.[/tex]
x = [tex]\frac{5}{2}[/tex] , y = [tex]\frac{3}{2}[/tex]
c)
[tex]\left \{ {{3x-2y=0} \atop {2x-y=7}} \right.[/tex]
x = 14 , y = 21
d)
[tex]\left \{ {{2x-y=4} \atop {x-2y=7}} \right.[/tex]
x = -5 , y = -6
e)
[tex]\left \{ {{x-3y=1} \atop {2x-3y=-2}} \right.[/tex]
x = -3 , y = -[tex]\frac{4}{3}[/tex]
f)
[tex]\left \{ {{2x-y=1} \atop {x-2y=8}} \right.[/tex]
x = -2 , y = -5
g)
[tex]\left \{ {{2x-3y=17} \atop {6x-2y=16}} \right.[/tex]
x = 1 , y = -5
Szczegółowe wyjaśnienie:
