Pembahasan Soal Matematika UN SMA/SMK – Sistem Persamaan & Pertidaksamaan Linear #1

Berikut adalah penjelasan penyelesaian soal UN sistem persamaan linear tiga variabel.

Jika \displaystyle \left( {{x}_{0}},{{y}_{0}},{{z}_{0}} \right) memenuhi sistem persamaan \displaystyle \left\{ \begin{matrix} 3x-2y-3z=5 \\ x+y-2z=3 \\ x-y+z=-4 \\ \end{matrix} \right., nilai \displaystyle {{z}_{0}} adalah ….

A. -3

B. -2

C. -1

D. 4

E. 5

(UN 2006)

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