Ако може да ми помогнете.

[десислава]

Помогнете ми!

2x + 3y - 4z = -2
5x - 2y + 2z = 5
7x + 5y - 3z = 8

[Реклама]

[Worstboy]

2z=2y+5-5x

2x+3y-2(2y+5-5x)=-2
y=12x-8

2z=2(12-+5-5x
z=(19x-11)/2

7x-5(12x--3[(19x-11)/2]=8
x=9/11
y=20/11
z=25/11

(9/11;20/11;25/11)[/url]

[Worstboy]

2z=2y+5-5x

2x+3y-2(2y+5-5x)=-2
y=12x-8

2z=2(12x-8 )+5-5x
z=(19x-11)/2

7x-5(12x-8 )-3[(19x-11)/2]=8
x=9/11
y=20/11
z=25/11

(9/11;20/11;25/11)