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Sabohat2001
@Sabohat2001
July 2022
1
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X-z=-1
X+z=2
Y-z=-5
(X+y+z)/3=?
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sedinalana
Verified answer
Прибавим 1 и 2
2х=1
х=0,5
подставим во 2
0,5+z=2
z=2-0,5=1,5
подставим в 3
y-1,5=-5
y=-5+1,5
y=-3,5
(x+y+z)/3=(0,5+1,5-3,5)/3=-1,5/3=-0,5
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Answers & Comments
Verified answer
Прибавим 1 и 22х=1
х=0,5
подставим во 2
0,5+z=2
z=2-0,5=1,5
подставим в 3
y-1,5=-5
y=-5+1,5
y=-3,5
(x+y+z)/3=(0,5+1,5-3,5)/3=-1,5/3=-0,5