(1)-(2)
4y-3z=5,28y-21z=35.4)
(2)*3-(3)
-11y+7z=-1,-11y+21z=-3.5)
4)+5)
17y=32
y=32/17
z=4*32/17-85/17=43/17
x=6+z-y=6+11/17=113/17
(1)-(2)
4y-3z=5,28y-21z=35.4)
(2)*3-(3)
-11y+7z=-1,-11y+21z=-3.5)
4)+5)
17y=32
y=32/17
z=4*32/17-85/17=43/17
x=6+z-y=6+11/17=113/17