2x + 3y - z = 6
2x - y + 2z = -8
3x - y + z = -7
Ola Paulo
z = 2x + 3y - 6
2x - y + 4x + 6y - 12 = -8
6x + 5y = 4
3x - y + 2x + 3y - 6 = -7
5x + 2y = -1
agora
12x + 10y = 8
2y = -1 - 5x
10y = -5 - 25x
12x - 5 - 25x = 8
-13x = 13
x = -1
y = (-1 - 5x)/2 = (-1 + 5)/2 = 2
z = 2x + 3y - 6 = -2 + 6 - 6 = -2
pronto
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Ola Paulo
2x + 3y - z = 6
z = 2x + 3y - 6
2x - y + 2z = -8
2x - y + 4x + 6y - 12 = -8
6x + 5y = 4
3x - y + z = -7
3x - y + 2x + 3y - 6 = -7
5x + 2y = -1
agora
6x + 5y = 4
5x + 2y = -1
12x + 10y = 8
2y = -1 - 5x
10y = -5 - 25x
12x - 5 - 25x = 8
-13x = 13
x = -1
y = (-1 - 5x)/2 = (-1 + 5)/2 = 2
z = 2x + 3y - 6 = -2 + 6 - 6 = -2
pronto