SOLUTION: Solve for x, y, and z. Use only linear combination and/or substitution. Do not use matrices.
2x - 12y + 3z = -19
4x + 6y - 2z = 14
6x - 9y - 4z = 13
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Question 356680: Solve for x, y, and z. Use only linear combination and/or substitution. Do not use matrices.
2x - 12y + 3z = -19
4x + 6y - 2z = 14
6x - 9y - 4z = 13
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
1.
2.
3.
From eq. 1,
Multiply by (2),
Multiply by (3),
Now substitute into eq. 2 and eq. 3,
4.
.
.
5.
From eq. 4,
Substitute into eq. 5,
Then,
Then,
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