Question

Penyeleaaian persamaan linier 3 variabel

3x - 2y + 4z = 10
2x + 3y - 6z = -2
4x - 2y + 5z = 14

Answer 1

Pers 1 dan 3
3x - 2y + 4z = 10
4x - 2y + 5z = 14
__________________ -
-x + 0 -z = -4
x + z = 4

pers 1 dan 2
3x - 2y + 4z = 10 | x3 | 9x - 6y + 12z = 30
2x + 3y - 6z = -2 | x2 | 4x + 6y - 12z = -4
_________________________________________ +
13x + 0 + 0 = 26
x = 2

x+z=4
z=2

3x - 2y + 4z = 10
3(2) - 2y + 4(2) = 10
6 - 2y + 8 = 10
-2y = 10 - 14
-2y=-4
y=2