Question

resolver sistema linear classifique alguem pode mim ajudar c)2x +y+z=8 ×+y+4z=15 3y +2z=9

Answer 1

Ola Alex

2x + y + z = 8
x + y + 4z = 15
3y + 2z = 9

y = 8 - 2x - z 
3y = 24 - 6x - 3z

x + 8 - 2x - z + 4z = 15
x - 3z = -7

24 - 6x - 3z + 2z = 9
6x + z = 15

x - 3z = -7
18x + 3z = 45
19x = 38
x = 2

2 - 3z = -7
3z = 9
z = 3

y = 8 - 2x - z = 8 - 4 - 3 = 1

S = ((x,y,z) (2, 1, 3))

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