X – 2y – 4z = 2 2x – 3y – 6z = -1 X = ?

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X - 2y - 4z = 2 2x - 3y - 6z = -1 X = ?

X - 2y - 4z = 2 2x - 3y - 6z = -1 X = ?

X - 2y - 4z = 2 2x - 3y - 6z = -1 X = ?

X - 2y - 4z = 2 2x - 3y - 6z = -1 X = ?

X - 2y - 4z = 2 2x - 3y - 6z = -1 X = ?

X – 2y – 4z = 2 2x – 3y – 6z = -1 X = ?

Jawaban:

x-2y-4z= 2

2x-3y-6z=-1

atas kali tiga bawah kali dua

3x-6y-12z= 6

4x-6y-12z= -3

tinggal coret yang sama jdi

ambil salah satu persamaan

3x= 6

x= 6:3

x= 2