Odpowiedź :
x-1 x-y 1
___ _ ___ = - ___
3 2 2
x + y = 3 --->> x = 3 - y
3-y-1 3-y-y 1
_____ _ ____ = - ___
3 2 2
2-y 3-2y 1
___ _ ____ = - ___
3 2 2
4-2y 9-6y 3
___ _ ____ = - ___
6 6 6
4y - 2
_____ = 0
6
4y - 2 = 0
y= 0,5
x = 3 - y
x= 2,5
___ _ ___ = - ___
3 2 2
x + y = 3 --->> x = 3 - y
3-y-1 3-y-y 1
_____ _ ____ = - ___
3 2 2
2-y 3-2y 1
___ _ ____ = - ___
3 2 2
4-2y 9-6y 3
___ _ ____ = - ___
6 6 6
4y - 2
_____ = 0
6
4y - 2 = 0
y= 0,5
x = 3 - y
x= 2,5
x-y x-y
____ - _____ = - ½\6
3 2
x + y = 3
2(x-y)-3(x-y)=-3
x+y=3
2x-2y-3x+3y=-3
x+y=3
-x+y=-3
x+y=3
_________
2y=0
y=0
-x+0=-3/÷(-1)
x=3
x=3
y=0
____ - _____ = - ½\6
3 2
x + y = 3
2(x-y)-3(x-y)=-3
x+y=3
2x-2y-3x+3y=-3
x+y=3
-x+y=-3
x+y=3
_________
2y=0
y=0
-x+0=-3/÷(-1)
x=3
x=3
y=0